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: Physical abuse occurs in approximately one out of every ____ dating relationships.\Question: Choose the right answer from options given a) six b) four c) one d) ten

A: b
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Q: Most infected persons have ____ symptoms of disease.\Question: Choose the right answer from options given a) six b) no c) three d) one

A: b
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Q: Most mammals have ____ limbs and are born rather than hatched.\Question: Choose the right answer from options given a) no b) four c) zero d) three

A:
b
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