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').

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

[EX Q]: Infants usually die of pneumonia or other infections before reaching ____ years of age.\Question: Choose the right answer from options given a) nine b) four c) zero d) eight
[EX A]: b

[EX Q]: Bonds typically require ____ or more years to mature.\Question: Choose the right answer from options given a) six b) five c) ten d) two
[EX A]:
c