Peristalsis: How Muscle Contractions Move Food Through Your Digestive System

The correct answer is Peristalsis.

Peristalsis is a coordinated, involuntary muscular contraction that moves food through the digestive tract. It is a series of rhythmic contractions of the muscles of the esophagus, stomach, and intestines. These contractions push the food forward, allowing it to be digested and absorbed.