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').

Input: Consider Input: Hydra has ____ distinct methods of reproduction, asexual and sexual.\Question: Choose the right answer from options given a) two b) zero c) no d) ten

Output: a


Input: Consider Input: Nymphs emerge in ____ to seven days and flatten themselves against the leaf to feed.\Question: Choose the right answer from options given a) one b) five c) nine d) two

Output: b


Input: Consider Input: Mice are fertile animals because female mice come into heat every ____ to five days.\Question: Choose the right answer from options given a) five b) four c) three d) no


Output: b