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 European countries require ____ years of education.\Question: Choose the right answer from options given a) no b) nine c) six d) three

A: d
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Q: Some olive trees live to be ____ thousand years old.\Question: Choose the right answer from options given a) ten b) zero c) two d) seven

A: c
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Q: Most hemangiomas appear within a week or ____ after birth.\Question: Choose the right answer from options given a) three b) ten c) seven d) two

A:
d
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