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B
Secretions
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C
Peristalsis
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D
Villi
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Solution
The correct option is C Peristalsis
Muscular contraction of the alimentary canal is known as peristalsis. Peristalsis is a series of wave-like muscle contractions that moves food to different processing stations in the digestive tract. The process of peristalsis begins in the esophagus when a bolus of food is swallowed.