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: Eastern cottontails have ____ different fur coats each year.\Question: Choose the right answer from options given a) five b) two c) eight d) six

A: b
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Q: Most aphthous ulcers heal in one to ____ weeks.\Question: Choose the right answer from options given a) two b) eight c) one d) seven

A: a
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Q: Smokers die an average of ____ to eight years earlier than nonsmokers.\Question: Choose the right answer from options given a) seven b) six c) one d) no

A:
b
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