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: Bone marrow replenishes itself fully within ____ weeks.\Question: Choose the right answer from options given a) nine b) no c) one d) two

Output: d


Input: Consider Input: Reliability affects the production of goods in ____ distinct ways.\Question: Choose the right answer from options given a) one b) eight c) six d) three

Output: d


Input: Consider Input: Females give birth to one, occasionally two, large babies, after a pregnancy of six to ____ months.\Question: Choose the right answer from options given a) three b) seven c) zero d) ten


Output: b