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: Humans learn through the ____ senses.\Question: Choose the right answer from options given a) eight b) one c) five d) ten

A: c
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Q: Hamsters can live to be three to ____ years old.\Question: Choose the right answer from options given a) four b) two c) three d) nine

A: a
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Q: Hamsters can live to be three to ____ years old.\Question: Choose the right answer from options given a) four b) two c) three d) nine

A:
a
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