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: All mass spectrometers consist of ____ distinct regions.\Question: Choose the right answer from options given a) three b) one c) two d) zero

A: a
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Q: Scientists divide bats into ____ groups.\Question: Choose the right answer from options given a) five b) two c) one d) zero

A: b
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Q: Poverty impacts on the environment in ____ ways.\Question: Choose the right answer from options given a) zero b) eight c) two d) ten

A:
c
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