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').

Q: Children of alcoholics are ____ times more likely than other people to become alcoholics themselves.\Question: Choose the right answer from options given a) zero b) four c) nine d) two

A: b
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Q: Matter exists in ____ forms, solid, fluid and plasma.\Question: Choose the right answer from options given a) ten b) nine c) three d) five

A: c
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Q: Sloths hold onto tree branches with strong, curved claws that are on each of their ____ feet.\Question: Choose the right answer from options given a) zero b) one c) six d) four

A:
d
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