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: Scorpions also have ____ legs.\Question: Choose the right answer from options given a) eight b) zero c) nine d) ten

Output: a


Input: Consider Input: Cows breed at ____ years, bulls at four.\Question: Choose the right answer from options given a) two b) three c) seven d) one

Output: b


Input: Consider Input: Stability is achieved by having only ____ atoms per molecule.\Question: Choose the right answer from options given a) seven b) nine c) six d) two


Output: d