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: Pistillate flowers have a compound ovary with ____ locules topped by three sticky, sessile stigmas.\Question: Choose the right answer from options given a) zero b) three c) six d) seven

A: b
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Q: Tardigrades are microscopic, water-dwelling, segmented animals with ____ legs.\Question: Choose the right answer from options given a) eight b) nine c) one d) seven

A: a
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Q: Alkaline batteries last five to ____ times as long as zinc-carbon cells, their predecessors.\Question: Choose the right answer from options given a) zero b) two c) eight d) six

A:
c
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