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').
--------
Question: Children of alcoholics are ____ times more likely than other people to become alcoholics themselves.\Question: Choose the right answer from options given a) zero b) four c) nine d) two

Answer: b


Question: Mechanical digestion occurs as ____ strong layers of muscle contract to produce a churning motion.\Question: Choose the right answer from options given a) four b) no c) three d) six

Answer: c


Question: Notebooks are laptop computers that weigh between ____ and seven pounds.\Question: Choose the right answer from options given a) five b) two c) zero d) nine

Answer:
a