Which statement best describes the roles of dietary fiber in digestion and the differences between soluble and insoluble fibers?

Which statement best describes the roles of dietary fiber in digestion and the differences between soluble and insoluble fibers?

• A. Fiber promotes regularity and satiety; soluble fiber slows digestion and can lower cholesterol; insoluble fiber adds bulk and speeds intestinal transit.
• B. Fiber provides calories; soluble fiber speeds digestion; insoluble fiber reduces mineral absorption.
• C. Fiber is digested into glucose; soluble fiber increases cholesterol; insoluble fiber has no effect.
• D. Fiber is only found in animal products; soluble fiber is insoluble; both have identical effects.

Answer: (A)