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: Water weighs about ____ pounds per gallon.\Question: Choose the right answer from options given a) seven b) ten c) zero d) nine

A: b
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Q: Hypertension affects nearly one in ____ adults.\Question: Choose the right answer from options given a) three b) seven c) five d) zero

A: a
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Q: Camels have ____ sets of eyelids.\Question: Choose the right answer from options given a) three b) four c) eight d) nine

A:
a
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