Question

which statement best describes peristalsis?
peristalsis is a voluntary, two - way movement.
peristalsis moves the food along the digestive tract.
peristalsis breaks down carbohydrates in the mouth.
peristalsis absorbs water and nutrients.

Explanation:

Peristalsis is the involuntary, wave - like muscle contractions that propel food through the digestive tract. It is not a voluntary movement, does not break down carbohydrates in the mouth (that's mainly due to enzymes like amylase), and absorption of water and nutrients occurs mainly in the small and large intestines, not as the main function of peristalsis.

Answer:

Peristalsis moves the food along the digestive tract.