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: Heat pumps give off ____ fumes or harmful products of combustion.\Question: Choose the right answer from options given a) four b) zero c) six d) no

A: d
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Q: Most people recover in one to ____ months.\Question: Choose the right answer from options given a) no b) three c) seven d) eight

A: b
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Q: Pups are sooty black at birth, and acquire adult coloration at about ____ months.\Question: Choose the right answer from options given a) three b) six c) eight d) ten

A:
a
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