Question

the purpose of the villi located in the small intestine is to: a aid the movement of food along the small intestine b excrete enzymes to aid in the digestion of food c break down and process the waste that the secreted enzymes cannot break down d increase the surface area of the small intestine to allow for nutrient absorption.

Explanation:

Villi in the small intestine have micro - villi on their surface, which greatly increase the surface area available for the absorption of nutrients from digested food. They do not aid food movement, excrete enzymes for digestion, or break down indigestible waste.

Answer:

D. increase the surface area of the small intestine to allow for nutrient absorption.