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: Elephants rise ____ inches when they inhale.\Question: Choose the right answer from options given a) two b) five c) one d) eight

Answer: a


Question: Casinos have no windows and they have ____ clocks.\Question: Choose the right answer from options given a) six b) four c) eight d) no

Answer: d


Question: Mediastinal teratomas are ____ times more common in adults than in children.\Question: Choose the right answer from options given a) five b) nine c) eight d) six

Answer:
a