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').
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Question: Vision problems affect one in ____ school-aged children.\Question: Choose the right answer from options given a) six b) four c) seven d) one

Answer: b


Question: Millipedes have ____ pairs of legs on each body segment.\Question: Choose the right answer from options given a) seven b) ten c) six d) two

Answer: d


Question: Nymphs feed and molt ____ times before becoming adults.\Question: Choose the right answer from options given a) five b) eight c) no d) ten

Answer:
a