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Standard English Conventions / Form, Structure, and Sense Difficulty: Easy

Wanda Diaz-Merced is an astrophysicist who lost her sight when she was young. Diaz-Merced’s condition inspired her to develop software that can translate scientific data into sound. Sound-based tools blank scientists to detect subtle patterns in data. Such patterns may not be evident in traditional graphs.

Which choice completes the text so that it conforms to the conventions of Standard English?

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Explanation

Choice B is the best answer. The convention being tested is subject-verb agreement. The plural verb "enable" agrees in number with the plural subject "sound-based tools."

Choice A is incorrect because the singular verb "has enabled" doesn’t agree in number with the plural subject "sound-based tools." Choice C is incorrect because the singular verb "is enabling" doesn’t agree in number with the plural subject "sound-based tools." Choice D is incorrect because the singular verb "enables" doesn’t agree in number with the plural subject "sound-based tools."