The pyloric sphincter regulates flow of food into the 1. small intestine. 2. stomach. 3. ...

1
Rationale 1: The pyloric sphincter regulates food out of the stomach into the small intestine.
Rationale 2: The pyloric sphincter is where food moves out of the stomach.
Rationale 3: The cardiac sphincter keeps food from moving back into the esophagus.
Rationale 4: The pyloric sphincter regulates food out of the stomach, not the rectum.
Global Rationale: The pyloric sphincter regulates food out of the stomach into the small intestine. The pyloric sphincter is where food moves out of the stomach. The cardiac sphincter keeps food from moving back into the esophagus. The pyloric sphincter regulates food out of the stomach, not the rectum.

Words can't even express my thanks