Peristalsis is the physiological process through which food passes through your GI tract.

Concept: The given statement is true.

• The fact that we can move the food we ingest through our entire alimentary canal despite it being hollow is really interesting. 
• The muscles in the alimentary canal are specialized in such a way that constant contractions and relaxations are produced, which moves the food from the oesophagus to the stomach in a forward direction.
• Peristalsis is the term for a series of motions caused by repetitive contractions and relaxations.
• Peristalsis is a muscle contraction that shows how food moves through the digestive system. These intervals are crucial to the entire digestive process.

Hence, option A is the correct answer.