Question

multiple choice question
what is the nutritional benefit of water-insoluble fiber?

it reduces serum cholesterol and low density lipoproteins (ldls) levels.
it reduces serum albumin levels.
it softens the stool.
it reduces serum glucose levels.

Explanation:

To determine the nutritional benefit of water - insoluble fiber, we analyze each option:

1. Reducing serum cholesterol and LDLs is a function of water - soluble fiber, not insoluble fiber.
2. Water - insoluble fiber has no role in reducing serum albumin levels.
3. Water - insoluble fiber adds bulk to the stool and helps in softening it, which is one of its key nutritional benefits.
4. Reducing serum glucose levels is associated with water - soluble fiber, not insoluble fiber.

Answer:

It softens the stool.