Which of the following foods is a good source of dietary fiber?

Whole grains are considered a good source of dietary fiber due to their intact bran, germ, and endosperm, which preserve the natural components of the grain. This fiber is crucial for digestive health, as it aids in maintaining regular bowel movements, preventing constipation, and promoting a healthy gut microbiome. Additionally, dietary fiber from whole grains can help lower cholesterol levels, regulate blood sugar levels, and contribute to a feeling of fullness, which can support weight management.

In contrast, white rice is primarily composed of carbohydrates and lacks the fiber content found in whole grains because it has been stripped of its bran and germ during processing. Similarly, sugar and processed snacks typically contain little to no dietary fiber, often being high in calories without providing the nutritional benefits associated with fiber-rich foods. Therefore, whole grains stand out as the best option for those looking to increase their dietary fiber intake.