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').
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Question: Vaccinated newborns have protection for at least ____ years.\Question: Choose the right answer from options given a) four b) five c) two d) no

Answer: b


Question: Calves are born ____ and a half months after mating.\Question: Choose the right answer from options given a) six b) ten c) eight d) two

Answer: c


Question: Barn swallows are about ____ to seven and one half inches in length.\Question: Choose the right answer from options given a) no b) six c) seven d) eight

Answer:
b