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]: Babies show an interest in solid foods when they are approximately four to ____ weeks old.\Question: Choose the right answer from options given a) nine b) eight c) five d) six
[A]: c


[Q]: Smallmouth bass grow to ____ inches in their first growing season.\Question: Choose the right answer from options given a) five b) four c) seven d) ten
[A]: a


[Q]: Sexual maturity occurs at three to four years for females and four to ____ years for males.\Question: Choose the right answer from options given a) ten b) three c) seven d) five
[A]:
d