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Form, Structure, and Sense SAT question
Reading and Writing · Standard English Conventions · Hard · Answer it here, explanation included.
In the 1970s, Janaki Ammal, a prominent botanist, emerged as a powerful voice in India’s environmental conservation movement. Her exhaustive chromosomal survey of plants in Silent Valley, a pristine tropical forest in Kerala, India, that is home to nearly 1,000 species of native flora (many of which are endangered), blank instrumental in the government’s decision to preserve the forest.
Which choice completes the text so that it conforms to the conventions of Standard English?
ExplanationShow
Choice D is the best answer. The subject "survey" is singular, and so is the verb "was."
Choice A is incorrect. The subject "survey" is singular, but the verb "are" is plural. Choice B is incorrect. The subject "survey" is singular, but the verb "were" is plural. Choice C is incorrect. The subject "survey" is singular, but the verb "have been" is plural.
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