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: TriMetal Irons Discover the benefits of ____ different metals.\Question: Choose the right answer from options given a) five b) seven c) no d) three

A: d
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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: Pinks live only ____ years.\Question: Choose the right answer from options given a) two b) nine c) one d) no

A:
a
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