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: Influenza epidemics are ____ times more likely during solar maxima.\Question: Choose the right answer from options given a) ten b) eight c) no d) four

A: d
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Q: Chlorine gives vinyl ____ advantages.\Question: Choose the right answer from options given a) six b) four c) two d) ten

A: c
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Q: Spiders usually have a round or oblong body and ____ legs.\Question: Choose the right answer from options given a) one b) nine c) six d) eight

A:
d
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