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: Today there are ____ federal states, each based on cultural affiliations.\Question: Choose the right answer from options given a) one b) nine c) seven d) zero

Output: b


Input: Consider Input: Female elephants have babies about ____ years apart, and they have only one each time.\Question: Choose the right answer from options given a) eight b) one c) zero d) three

Output: d


Input: Consider Input: Most children can learn to read when they are ____ years old if properly instructed and motivated.\Question: Choose the right answer from options given a) four b) seven c) no d) three


Output: a