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: Most people have ____ kidneys.\Question: Choose the right answer from options given a) two b) five c) seven d) six

A: a
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Q: Stroke is the number ____ cause of death in the United States.\Question: Choose the right answer from options given a) ten b) nine c) one d) three

A: d
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Q: Artificial nectar ferments quickly, in ____ to two days.\Question: Choose the right answer from options given a) ten b) one c) nine d) six

A:
b
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