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: Females can only have four babies at ____ time.\Question: Choose the right answer from options given a) no b) one c) nine d) three

A: b
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Q: Vaccination typically occurs at ____ to eight weeks of age in kittens.\Question: Choose the right answer from options given a) three b) nine c) six d) no

A: c
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Q: Seabirds drink seawater that has a salt content ____ times greater than the bird's body fluids.\Question: Choose the right answer from options given a) five b) three c) eight d) four

A:
b
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