The circular folds of the small intestine enhance absorption by causing the chyme to spiral, rather than to move in a straight line, as it passes through the small intestine.

This is true.

Explanation:

Digestion is the process by which food substances are broken down into smaller substances through enzymatic actions and then absorbed into the body as nutrients.

As food passes through the digestive tract, it becomes less complex and the nutrients are more readily available to the body.

The circular folds of the small intestine enhance absorption by causing the chyme to spiral, rather than to move in a straight line, as it passes through the small intestine.