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: Wolverines reproduce every ____ or three years.\Question: Choose the right answer from options given a) two b) three c) one d) four

A: a
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Q: Rock cavies become sexually mature when they are about one to ____ months old.\Question: Choose the right answer from options given a) one b) four c) three d) seven

A: c
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Q: Arthropods are divided into ____ sub-phyla.\Question: Choose the right answer from options given a) seven b) three c) five d) no

A:
c
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