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: Sexual reproduction involves ____ parents, one male and one female.\Question: Choose the right answer from options given a) zero b) two c) nine d) four

Output: b


Input: Consider Input: Men are ____ times as likely to commit suicide than women.\Question: Choose the right answer from options given a) seven b) two c) four d) one

Output: c


Input: Consider Input: Amazonian manatees are the smallest of the ____ species.\Question: Choose the right answer from options given a) eight b) three c) no d) six


Output: b