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]: Mares normally give birth to their first foal when they are between three and ____ years of.\Question: Choose the right answer from options given a) ten b) no c) six d) four
[EX A]: c

[EX Q]: Rabbits reach sexual maturity between three and ____ months of age.\Question: Choose the right answer from options given a) three b) seven c) six d) zero
[EX A]: c

[EX Q]: Most school counselors work ____ or ten months a year with time off during school vacations.\Question: Choose the right answer from options given a) nine b) three c) six d) ten
[EX A]:
a