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: Evolution is dependent on ____ forces.\Question: Choose the right answer from options given a) no b) five c) two d) seven

A: c
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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: Cancer affects three out of ____ families in America today.\Question: Choose the right answer from options given a) six b) four c) three d) zero

A:
b
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