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: Astronomical observations suggest ____ or close to zero space-time curvature.\Question: Choose the right answer from options given a) six b) zero c) ten d) seven

Output: b


Input: Consider Input: Youth unemployment is ____ times the adult level.\Question: Choose the right answer from options given a) one b) three c) seven d) no

Output: b


Input: Consider Input: Women devote their lives to raising families of six, seven, and ____ children.\Question: Choose the right answer from options given a) eight b) five c) six d) three


Output: a