Which process is primarily responsible for moving food through the alimentary canal in humans?

Eliminate incorrect options: Active transport, osmosis, and diffusion are processes related to the movement of molecules across membranes, but they do not involve muscular contractions or the physical movement of food through the digestive tract.

Relate peristalsis to food movement: Peristalsis is the primary mechanism for moving food through the alimentary canal. It involves the coordinated contraction and relaxation of circular and longitudinal muscles in the canal walls.