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: Female cats can go into heat for the first time as early as ____ months of age.\Question: Choose the right answer from options given a) four b) zero c) five d) eight

Answer: c


Question: Diarrheal disease kills ____ million children every year.\Question: Choose the right answer from options given a) three b) no c) four d) ten

Answer: a


Question: Gerbils usually live for three to ____ years.\Question: Choose the right answer from options given a) zero b) four c) nine d) eight

Answer:
b