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: 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: Bone marrow replenishes itself fully within ____ weeks.\Question: Choose the right answer from options given a) nine b) no c) one d) two

A: d
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Q: Infective endocarditis affects ____ times as many elderly men as elderly women.\Question: Choose the right answer from options given a) eight b) seven c) no d) two

A:
a
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