20 medium SAT Form, Structure, and Sense questions
Medium is where most scores are actually won and lost. These questions are not tricky for the sake of it, but every one of them has a wrong answer built to catch a specific shortcut.
Every question below is a real item from the SAT Climb bank, tagged medium by the same difficulty model the app uses to build your practice. Pick an answer before you open the explanation.
Reading & Writing · Standard English Conventions~6 per testMedium tier
In the 1960s, marine biologist Sylvia Earle pioneered the use of self-contained underwater breathing apparatus for deep-sea research. Her innovative techniques, which allowed scientists to observe marine ecosystems in their natural habitats, ______ the foundation for modern oceanographic fieldwork.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why B is right
The past tense verb 'established' correctly matches the temporal context of Earle's work in the 1960s and pairs with the past tense verb 'pioneered' earlier in the sentence. The subject 'Her innovative techniques' requires a finite verb form to complete the independent clause.
Why the others are wrong
AThis present perfect tense form incorrectly suggests an action that began in the past and continues to the present, but the context establishes that Earle's pioneering work occurred in the 1960s.
CThis present tense form creates a tense inconsistency with 'pioneered' and fails to match the historical timeframe indicated by 'In the 1960s.'
DThis participle form cannot serve as the main verb of the clause and would create a sentence fragment, leaving the subject 'Her innovative techniques' without a complete predicate.
Question 2Medium
The architect Frank Lloyd Wright, whose innovative designs revolutionized American residential architecture in the early twentieth century, ______ more than 500 structures during his career.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why C is right
The singular subject 'Frank Lloyd Wright' requires a singular verb in the past tense. The long relative clause 'whose innovative designs revolutionized American residential architecture in the early twentieth century' separates the subject from the verb, but 'designed' correctly agrees with 'Wright.'
Why the others are wrong
AThis choice creates a subject-verb agreement error. The plural verb 'have designed' does not agree with the singular subject 'Frank Lloyd Wright.'
BThis choice creates an incomplete verb form. The present participle 'designing' cannot function as the main verb of the clause without a helping verb.
DThis choice creates a verb tense error. The present-tense 'designs' is inconsistent with the past-tense context of Wright's completed career.
Question 3Medium
In 1962, marine biologist Rachel Carson published Silent Spring, a groundbreaking book that documented the harmful effects of pesticides on ecosystems. Carson's meticulous research and compelling prose ______ the modern environmental movement and led to significant policy changes.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why B is right
Choice B is the best answer. The convention being tested is verb tense. The past-tense verb 'sparked' is consistent with the past-tense context established by 'published' and 'documented,' indicating completed historical actions.
Why the others are wrong
AThis choice creates a tense error. The present perfect 'have sparked' is inconsistent with the simple past tense used throughout the sentence to describe Carson's completed historical impact.
CThis choice creates a tense error. The present-tense verb 'sparks' is inconsistent with the past-tense context established by the surrounding verbs.
DThis choice creates a modifier placement error. The participial form 'sparking' cannot serve as the main verb of the clause and would leave the sentence without a complete predicate.
Question 4Medium
In 1962, marine biologist Rachel Carson published Silent Spring, a groundbreaking work that examined the environmental impact of pesticides. The book, which challenged the chemical industry's claims about safety, ______ a catalyst for the modern environmental movement.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why B is right
Choice B is the best answer. The convention being tested is verb tense. The past-tense verb 'became' is consistent with the past-tense context established by 'published' and matches the historical nature of the event being described.
Why the others are wrong
AThis choice creates a verb form error. The present participle 'becoming' cannot serve as the main verb of the clause without a helping verb.
CThis choice creates a subject-verb agreement error. While 'become' can be a plural present-tense form, the subject 'book' is singular and the context requires past tense.
DThis choice creates an incorrect verb construction. The perfect participle 'having become' suggests an action completed before another past action, but there is no later past action for it to precede.
Question 5Medium
Maya Angelou's autobiographical work I Know Why the Caged Bird Sings explores themes of racism, identity, and resilience. The book, which chronicles Angelou's childhood experiences in the segregated South, ______ readers with its honest portrayal of both trauma and triumph.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why D is right
Choice D is the best answer. The convention being tested is subject-verb agreement. The singular verb 'resonates' agrees in number with the singular subject 'The book,' despite the intervening relative clause that separates subject from verb.
Why the others are wrong
AThis choice creates a modifier placement error. The participial form 'resonating' cannot serve as the main verb of the clause and would leave the sentence grammatically incomplete.
BThis choice creates a subject-verb agreement error. The plural verb 'have resonated' doesn't agree with the singular subject 'The book.'
CThis choice creates a tense error. The present-tense plural form 'resonate' creates both a tense inconsistency and a subject-verb agreement error with the singular subject.
Question 6Medium
Archaeologist Hiram Bingham's 1911 expedition to Peru resulted in the documentation of Machu Picchu. The site, which had been known to local residents but not to Western scholars, ______ international attention to Incan architecture and engineering.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why D is right
The past-tense verb 'brought' agrees with the singular subject 'The site' and maintains consistency with the past-tense context established by 'resulted.' The relative clause 'which had been known to local residents but not to Western scholars' separates the subject from the verb but does not affect agreement.
Why the others are wrong
AThis creates a verb form error. The participle 'bringing' cannot serve as the main verb of the clause.
BThis creates a structural error. The infinitive 'to bring' cannot function as the main verb of the independent clause.
CThis creates a tense error. The present-tense 'bring' is inconsistent with the past-tense context established by 'resulted.'
Question 7Medium
Astronomer Vera Rubin's observations of galactic rotation rates challenged existing theories of gravity. Her research, conducted over several decades at the Carnegie Institution, ______ evidence for the existence of dark matter.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why C is right
The past-tense verb 'provided' agrees with the singular subject 'Her research' and maintains consistency with the past-tense context established by 'challenged.' The participial phrase 'conducted over several decades at the Carnegie Institution' modifies the subject but does not affect verb selection.
Why the others are wrong
AThis creates a tense error. The present-tense 'provide' is inconsistent with the past-tense context established by 'challenged.'
BThis creates a verb form error. The participle 'providing' cannot serve as the main verb of the clause.
DThis creates a structural error. The infinitive 'to provide' cannot function as the main verb of the independent clause.
Question 8Medium
Archaeologist Kathleen Kenyon's excavations at Jericho in the 1950s revolutionized the study of ancient Near Eastern civilizations. Her meticulous stratigraphic methods, which involved carefully analyzing layers of soil and artifacts, ______ archaeologists to date settlements with unprecedented precision.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why C is right
Choice C is the best answer. The convention being tested is verb tense and agreement. The past-tense verb 'enabled' correctly agrees with the singular subject 'Her meticulous stratigraphic methods' and maintains consistency with the historical context established by 'revolutionized.'
Why the others are wrong
AThis choice creates a verb form error. The participle 'enabling' cannot function as the main verb of the clause without an auxiliary verb.
BThis choice creates a verb tense error. The present-tense 'enables' conflicts with the past-tense context established in the passage.
DThis choice incorrectly introduces the pronoun 'them' before the verb, creating an ungrammatical construction.
Question 9Medium
The Harlem Renaissance of the 1920s produced many influential writers, including Langston Hughes and Zora Neale Hurston. Among the movement's most innovative poets ______ Countee Cullen, whose work explored themes of racial identity and cultural heritage.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why C is right
Choice C is the best answer. The convention being tested is subject-verb agreement. The singular verb 'was' agrees in number with the singular subject 'Countee Cullen,' which follows the inverted structure 'Among the movement's most innovative poets.'
Why the others are wrong
AThis choice creates a subject-verb agreement error. The plural verb 'were' doesn't agree with the singular subject 'Countee Cullen.'
BThis choice creates a tense error. The present-tense verb 'are' is inconsistent with the past-tense historical context established by 'produced.'
DThis choice creates a modifier placement error. The participial form 'being' cannot serve as the main verb and leaves the sentence incomplete.
Question 10Medium
Anthropologist Margaret Mead's 1928 study Coming of Age in Samoa challenged prevailing Western assumptions about adolescence. By demonstrating that teenage behavior varied significantly across cultures, Mead and her subsequent research ______ the field of cultural anthropology and influenced debates about nature versus nurture.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why C is right
Choice C is the best answer. The past-tense verb 'transformed' agrees with the compound subject 'Mead and her subsequent research' and maintains consistency with the past-tense verbs 'challenged' and 'varied.'
Why the others are wrong
AThis choice creates a tense error. The present-tense 'transforms' is inconsistent with the past-tense context established by the 1928 study and other past-tense verbs in the passage.
BThis choice creates a tense error. While 'have transformed' agrees in number with the compound subject, the present perfect tense is inappropriate for completed historical actions.
DThis choice creates a tense error. The past progressive 'were transforming' suggests ongoing action rather than completed transformation.
Question 11Medium
The paintings of Mexican artist Frida Kahlo, known for their vivid colors and surrealist imagery, often explore themes of pain, identity, and the female experience. One of her most famous works, The Two Fridas, ______ two versions of the artist sitting side by side, representing her dual heritage and inner conflict.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why D is right
The singular subject 'The Two Fridas' requires the singular present-tense verb 'depicts.' Despite the plural-sounding title, it refers to a single painting, and the present tense is appropriate for describing the content of an artwork.
Why the others are wrong
AThis choice creates a subject-verb agreement error. The plural verb 'depict' does not agree with the singular subject 'The Two Fridas,' which refers to one painting.
BThis choice creates a verb tense error. The past tense 'depicted' is less appropriate than the present tense when describing what a painting shows.
CThis choice creates an incomplete verb form. The phrase 'them depicting' introduces an unnecessary pronoun and lacks a main verb.
Question 12Medium
Economist Elinor Ostrom challenged conventional wisdom about the management of common resources. Her research on community-based governance systems, which examined how groups successfully manage shared resources without privatization or government intervention, ______ her the first woman to win the Nobel Prize in Economics.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why C is right
Choice C is the best answer. The convention being tested is verb form and agreement. The past-tense verb 'earned' correctly agrees with the singular subject 'Her research' and maintains parallel structure with 'challenged' earlier in the passage.
Why the others are wrong
AThis choice creates a verb form error. The participle 'earning' cannot serve as the main verb of the clause without creating a fragment.
BThis choice creates a verb tense error. The present-tense 'earn' conflicts with the past-tense historical context of the passage.
DThis choice incorrectly introduces the pronoun 'she' as a subject, creating a redundancy since 'Her research' is already the subject of the clause.
Question 13Medium
The discovery of King Tutankhamun's tomb in 1922 captivated the world and provided unprecedented insights into ancient Egyptian burial practices. Howard Carter, the British archaeologist who led the excavation, spent nearly a decade cataloging the tomb's contents. The artifacts that Carter and his team ______ included elaborate jewelry, ceremonial weapons, and intricately painted furniture.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why D is right
Choice D is the best answer. The convention being tested is verb tense. The past-tense verb 'discovered' is consistent with the past-tense historical context established by 'captivated,' 'provided,' and 'spent.'
Why the others are wrong
AThis choice creates a tense error. The present-tense verb 'discovers' is inconsistent with the past-tense context of the completed historical event.
BThis choice creates a modifier placement error. The participial form 'discovering' cannot serve as the main verb of the relative clause and leaves it incomplete.
CThis choice creates a subject-verb agreement error. The singular verb 'has discovered' doesn't agree with the plural subject 'The artifacts that Carter and his team.'
Question 14Medium
During the Harlem Renaissance, poet Langston Hughes captured the rhythms of jazz and blues in his verse. His innovative style, which incorporated musical elements and vernacular speech, ______ a new form of American poetry that celebrated Black culture and experience.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why C is right
Choice C is the best answer. The convention being tested is subject-verb agreement and verb tense. The singular past-tense verb 'established' agrees with the singular subject 'His innovative style' and matches the historical timeframe of the passage.
Why the others are wrong
AThis choice creates a subject-verb agreement error. The plural verb 'have established' doesn't agree with the singular subject 'His innovative style.'
BThis choice creates a verb form error. The infinitive 'to establish' cannot serve as the main verb of the clause.
DThis choice incorrectly introduces the pronoun 'it,' creating redundancy since the subject 'His innovative style' is already stated.
Question 15Medium
In the 1950s, African American architect Paul Revere Williams designed homes for celebrities across Los Angeles. His innovative use of floor plans—which maximized natural light while maintaining privacy—and ______ his reputation as one of the most sought-after residential designers of the era.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why B is right
The missing verb is part of the same clause as 'maximized' and shares the subject 'His innovative use of floor plans.' The past-tense form 'established' matches the parallel structure with 'maximized.'
Why the others are wrong
AThis creates a verb form error. The missing verb needs to match the past-tense 'maximized' in parallel structure, not use a present participle.
CThis creates a modifier placement error. The perfect participle 'having established' suggests a completed action before another past action, which disrupts the parallel structure.
DThis creates a subject-verb agreement error in tense. While 'establishes' is singular, it doesn't match the past-tense context established by 'designed' and 'maximized.'
Question 16Medium
The architectural legacy of ancient Rome, which includes structures like the Colosseum and the Pantheon, reflects both engineering innovation and imperial ambition. These monuments, constructed with concrete and featuring sophisticated arches and domes, ______ survived for nearly two millennia and continue to influence modern architecture.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why C is right
Choice C is the best answer. The plural present perfect verb 'have' agrees with the plural subject 'These monuments' and appropriately describes an action that began in the past and continues to the present.
Why the others are wrong
AThis choice creates a subject-verb agreement error. The singular verb 'has' does not agree with the plural subject 'These monuments.'
BThis choice creates a verb form error. The present participle 'having' cannot serve as the main verb without an auxiliary verb.
DThis choice creates both a subject-verb agreement error and a tense error. The singular present-tense 'survives' does not agree with the plural subject and fails to capture the ongoing nature described by 'continue.'
Question 17Medium
Historian Mary Beard has devoted much of her career to studying ancient Rome, particularly the lives of ordinary citizens. In her 2015 book SPQR, Beard argues that understanding the experiences of common Romans, rather than focusing solely on emperors and generals, ______ essential to grasping how the empire functioned.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why D is right
Choice D is the best answer. The convention being tested is subject-verb agreement. The singular verb 'is' agrees with the singular gerund subject 'understanding,' even though the long phrase separates the subject from the verb.
Why the others are wrong
AThis choice creates a subject-verb agreement error. The plural verb 'are' does not agree with the singular gerund subject 'understanding.'
BThis choice creates a tense error. The past-tense 'were' is inappropriate because Beard's argument in her 2015 book represents a present claim about historical methodology.
CThis choice creates a verb form error. The present participle 'being' cannot serve as the main verb without a helping verb.
Question 18Medium
In 1985, marine biologist Sylvia Earle led the first team to explore the depths of the Pacific Ocean using newly developed submersible technology. During the expedition, Earle and her colleagues ______ several previously unknown species of deep-sea fish.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why B is right
The missing verb is part of the same clause as 'led' and shares the subject 'Earle and her colleagues.' The past-tense form 'discovered' matches the past-tense context established by 'led' in 1985.
Why the others are wrong
AThis choice creates a subject-verb agreement error. The plural subject 'Earle and her colleagues' requires the plural verb 'discover' or the past-tense 'discovered,' not the singular present-tense 'discovers.'
CThis choice creates a verb tense error. The future tense 'will discover' is inconsistent with the past-tense context established by 'In 1985' and 'led.'
DThis choice creates an incomplete verb form. The phrase 'them discovering' lacks a main verb and introduces an unnecessary pronoun.
Question 19Medium
During the Harlem Renaissance of the 1920s, poet Langston Hughes became known for incorporating jazz rhythms and vernacular speech into his work. Hughes, along with other artists of the era, ______ new forms of expression that celebrated Black culture and challenged racial stereotypes.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why D is right
Choice D is the best answer. The past-tense verb 'created' agrees with the compound subject 'Hughes, along with other artists' and maintains consistency with the past-tense context of the 1920s.
Why the others are wrong
AThis choice creates a tense error. The present-tense 'creates' is inconsistent with the historical context of the 1920s Harlem Renaissance.
BThis choice creates a verb form error. The gerund 'creating' cannot function as the main verb of the independent clause.
CThis choice creates a subject-verb agreement error. Although 'create' might seem to match a plural subject, the phrase 'along with other artists' is a modifier, and the singular subject 'Hughes' requires a singular verb form in past tense.
Question 20Medium
In 1920, archaeologist Manuel Gamio began a comprehensive study of the Teotihuacan Valley in Mexico. Over several years, Gamio and his team excavated ruins, interviewed local residents, and ______ detailed maps of the region's archaeological sites.
Which choice completes the text so that it conforms to the conventions of Standard English?
Show the answer and explanation
Why B is right
The missing verb is part of the same clause as 'excavated' and 'interviewed,' with 'Gamio and his team' as the subject of all three verbs. The past-tense form 'created' matches the parallel verbs 'excavated' and 'interviewed.'
Why the others are wrong
AThis choice creates a tense error. The present-tense 'creates' doesn't match the past-tense verbs 'excavated' and 'interviewed' in the parallel series.
CThis choice creates a modifier error. The participial form 'creating' breaks the parallel structure with the finite verbs 'excavated' and 'interviewed.'
DThis choice creates a tense error. The base form 'create' doesn't match the past-tense verbs 'excavated' and 'interviewed.'
What to do after medium
Medium is the tier that decides most scores. If these are landing, the hard set is where the remaining points are.
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