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: Condors become sexually mature at about five or ____ years of age and mate for life.\Question: Choose the right answer from options given a) nine b) seven c) one d) six

Output: d


Input: Consider Input: Ammonia is among the ____ most abundantly produced chemicals in the world.\Question: Choose the right answer from options given a) five b) zero c) no d) eight

Output: a


Input: Consider Input: Warts have a finite life span of anywhere from ____ months up to five years.\Question: Choose the right answer from options given a) eight b) six c) ten d) three


Output: b