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: Angiosperms inhabit all ____ continents, as well as the oceans.\Question: Choose the right answer from options given a) five b) seven c) three d) zero

A: b
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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: Climbers are the most frequent cause of injury for children ____ and older.\Question: Choose the right answer from options given a) zero b) two c) seven d) six

A:
d
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