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: Many soils have ____ major layers or horizons, top soil, subsoil and parent material.\Question: Choose the right answer from options given a) one b) two c) seven d) three

A: d
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Q: Elephants also have four molars, ____ on the top and one on the bottom on both sides of the mouth.\Question: Choose the right answer from options given a) two b) eight c) three d) one

A:
d
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