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: Blood pressure is measured by ____ numbers.\Question: Choose the right answer from options given a) zero b) eight c) two d) seven

A: c
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Q: Fever usually lasts for an average of ____ days in adults.\Question: Choose the right answer from options given a) zero b) three c) nine d) two

A: b
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Q: Spiders usually have ____ fingerlike silk glands called spinnerets located beneath their abdomen.\Question: Choose the right answer from options given a) six b) four c) nine d) three

A:
a
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