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: Golden jackals live eight to ____ years in the wild and up to sixteen in captivity.\Question: Choose the right answer from options given a) no b) zero c) ten d) nine

A: d
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Q: Goats have all four sets of permanent teeth usually by ____ years of age.\Question: Choose the right answer from options given a) zero b) four c) seven d) ten

A:
b
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