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: Females reach sexual maturity around ____ to five year-olds.\Question: Choose the right answer from options given a) four b) five c) one d) ten

A: a
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Q: Photosynthesis occurs in ____ phases.\Question: Choose the right answer from options given a) four b) two c) nine d) five

A: b
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Q: Striped mullet are able to reproduce at about ____ years of age.\Question: Choose the right answer from options given a) six b) three c) ten d) eight

A:
b
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