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: Some taxonomists classify only ____ species though.\Question: Choose the right answer from options given a) one b) six c) two d) three

A: c
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Q: Water is present in all ____ phases in Earth s atmosphere.\Question: Choose the right answer from options given a) six b) nine c) two d) three

A: d
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Q: Some physicians give kids antibiotics for ____ months or more to try to control the infection.\Question: Choose the right answer from options given a) two b) six c) four d) one

A:
b
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