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: Baboons can travel up to ____ miles a day.\Question: Choose the right answer from options given a) seven b) three c) two d) six

A: d
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Q: 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

A: c
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Q: Many infected babies have ____ symptoms at birth, but symptoms develop weeks or months later.\Question: Choose the right answer from options given a) four b) six c) no d) one

A:
c
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