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: Calves can swim ____ days after they are born.\Question: Choose the right answer from options given a) ten b) two c) zero d) one

A: b
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Q: Ants have six legs, and each leg has ____ joints.\Question: Choose the right answer from options given a) nine b) zero c) two d) three

A: d
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Q: Piglets are born with stripes, which disappear in the first ____ months.\Question: Choose the right answer from options given a) eight b) three c) six d) zero

A:
c
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