Question becaus
Because a cycle of lunar phases blank 29.5 days to complete, it’s possible to observe two full moons in a single month, one at the beginning and one at the end.
Which choice completes the text so that it conforms to the conventions of Standard English?
take
takes
are taking
have taken
Because a cycle of lunar phases ______ blank 29.5 days to complete, it’s possible to observe
Hard-difficulty · SAT Reading & Writing · Boundaries — Fragments vs complete sentences. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice D is the best answer. The convention being tested is subject-verb agreement. The singular verb "takes" agrees in number with the singular subject "a cycle of lunar phases."
Choice A is incorrect because the plural verb "are taking" doesn’t agree in number with the singular subject "a cycle of lunar phases." Choice B is incorrect because the plural verb "have taken" doesn’t agree in number with the singular subject "a cycle of lunar phases." Choice C is incorrect because the plural verb "take" doesn’t agree in number with the singular subject "a cycle of lunar phases."
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