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: Marriage is the legal union of ____ people.\Question: Choose the right answer from options given a) one b) no c) five d) two

Output: d


Input: Consider Input: Female bilbies have a backward-opening pouch with ____ nipples.\Question: Choose the right answer from options given a) no b) two c) five d) eight

Output: d


Input: Consider Input: Scientists currently recognize ____ subspecies of North American elk.\Question: Choose the right answer from options given a) zero b) eight c) ten d) six


Output: d