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: Collars come in ____ shapes.\Question: Choose the right answer from options given a) six b) two c) four d) zero

A: b
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Q: Some motors contain ____ gears and spin very fast, and have little if any torque.\Question: Choose the right answer from options given a) four b) three c) five d) no

A: d
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Q: Newborn apes rely on their mothers for milk and depend on their care for ____ years.\Question: Choose the right answer from options given a) four b) five c) seven d) three

A:
b
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