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]: Elk retain their antlers for more than ____ months of the year.\Question: Choose the right answer from options given a) nine b) ten c) six d) seven
[A]: c


[Q]: Corn borers complete at least ____ generations each summer.\Question: Choose the right answer from options given a) zero b) three c) two d) ten
[A]: c


[Q]: Copulation occurs with the ____ dolphins belly to belly.\Question: Choose the right answer from options given a) two b) nine c) seven d) zero
[A]:
a