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: Mechanical stability comes from having fused quartz, in ____ gravity, cold.\Question: Choose the right answer from options given a) five b) zero c) six d) two

Output: b


Input: Consider Input: Most infected persons have ____ symptoms of disease.\Question: Choose the right answer from options given a) six b) no c) three d) one

Output: b


Input: Consider Input: Baseball is played by a number of ____ sport athletes.\Question: Choose the right answer from options given a) two b) no c) seven d) three


Output: a