2. Which of the following is an important reason to consume insoluble fiber? a. It provides digestible energy. b. It provides a source of energy for intestinal bacteria in humans. c. It facilitates the removal of solid waste by providing bulk. d. It inhibits the passage of stool. e. It supplies many water-soluble vitamins.

c. It facilitates the removal of solid waste by providing bulk.

The primary function of insoluble fiber is to add bulk to the stool, which helps to promote regular bowel movements and prevent constipation. Unlike soluble fiber, insoluble fiber does not dissolve in water and cannot be broken down by the body’s digestive enzymes. Instead, it passes through the digestive system largely intact, adding bulk and helping to move waste products through the colon and out of the body. This can help to promote digestive health and reduce the risk of certain conditions, such as constipation, hemorrhoids, and diverticular disease. Insoluble fiber does not provide digestible energy or inhibit the passage of stool, nor does it supply water-soluble vitamins.