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: Most children experience at least one episode by the time they are ____ years old.\Question: Choose the right answer from options given a) eight b) one c) ten d) seven

A: d
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Q: Sexual reproduction is varied in ____ ways.\Question: Choose the right answer from options given a) seven b) two c) five d) three

A: d
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Q: Hyacinths have a wingspan reaching nearly ____ feet.\Question: Choose the right answer from options given a) three b) zero c) two d) four

A:
d
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