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: Females inherit ____ X chromosomes, one from each parent.\Question: Choose the right answer from options given a) five b) two c) no d) seven

Output: b


Input: Consider Input: States are organized like the federal government, with ____ branches of government.\Question: Choose the right answer from options given a) three b) ten c) seven d) one


Output: a