Which of the following types of grain provides the most fiber per serving?

• A. Whole grains.
• B. Refined grains.
• C. Enriched grains.
• D. They all provide equal amounts of fiber.

Answer: (A)

Verified step by step guidance

1. Understand the definitions of the different types of grains: Whole grains contain all parts of the grain kernel (bran, germ, and endosperm), refined grains have had the bran and germ removed, and enriched grains are refined grains with some nutrients added back but not fiber.
2. Recognize that fiber is primarily found in the bran of the grain kernel, which is removed during the refining process.
3. Compare the fiber content of the grain types: Whole grains retain the bran and therefore have the highest fiber content, while refined and enriched grains have significantly less fiber because the bran is removed.
4. Eliminate the incorrect options: Refined grains and enriched grains cannot provide as much fiber as whole grains due to the absence of the bran.
5. Conclude that whole grains provide the most fiber per serving because they retain all parts of the grain kernel, including the fiber-rich bran.