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: Birds have ____ eyes.\Question: Choose the right answer from options given a) eight b) five c) nine d) two

A: d
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Q: Young emus are very vulnerable to disease until they are about ____ months old.\Question: Choose the right answer from options given a) no b) ten c) six d) three

A: d
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Q: Perennials live for more than ____ years.\Question: Choose the right answer from options given a) two b) ten c) six d) five

A:
a
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