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: Most women notice their breasts become fuller and firmer within the first six to ____ weeks.\Question: Choose the right answer from options given a) four b) eight c) zero d) ten

Output: b


Input: Consider Input: Most children have a vocabulary of eight to ____ words, including names, by eighteen months of age.\Question: Choose the right answer from options given a) ten b) one c) seven d) eight

Output: a


Input: Consider Input: Principled federalism implies the repeal of many federal statutes enacted over the past ____ decades.\Question: Choose the right answer from options given a) six b) zero c) eight d) ten


Output: a