To withstand extreme environmental conditions, microscopic creatures called tardigrades ______ a reversible state of suspended animation known as cryptobiosis. In this state, their metabolism drops to nearly zero, allowing them to survive without water for decades.
4
readingWhich choice completes the text so that it conforms to the conventions of Standard English?
A
enter
B
to enter
C
having entered
D
entering
Correct Answer: A
Choice A is the best answer. The subject "tardigrades" is plural. The verb must agree with the subject and fit the context of a general scientific fact. "Enter" is the correct plural, simple present tense verb.