Given a sentence with a missing word, pick the answer option that best fills out the missing word in the sentence. Indicate each answer with its index ('a', 'b', 'c', 'd').

Q: Prairie voles look like rodents with small rounded bodies, ____ short legs and a short tail.\Question: Choose the right answer from options given a) two b) nine c) four d) zero

A: c
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Q: Whales are divided into ____ categories, based on their teeth.\Question: Choose the right answer from options given a) two b) four c) nine d) ten

A: a
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Q: Lifespans range from ____ to over thirty years.\Question: Choose the right answer from options given a) three b) four c) zero d) six

A:
a
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