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: Today there are ____ basic classifications of sausage.\Question: Choose the right answer from options given a) five b) four c) six d) one

A: a
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Q: All birds have ____ legs with four toes each.\Question: Choose the right answer from options given a) zero b) one c) three d) two

A: d
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Q: State law allows radio waves to register ____ volts per meter.\Question: Choose the right answer from options given a) one b) seven c) six d) zero

A:
c
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