Which material is recognized for its role in digestion and elimination?

Fiber is recognized for its crucial role in digestion and elimination due to its unique properties that aid in maintaining a healthy digestive system. It promotes regular bowel movements by adding bulk to the stool, which helps to prevent constipation. This bulk facilitates the movement of food through the digestive tract, making it easier for the body to process and eliminate waste effectively.

Additionally, fiber can help to regulate blood sugar levels and lower cholesterol, contributing to overall digestive and cardiovascular health. Foods high in fiber, such as fruits, vegetables, whole grains, and legumes, not only support digestion but also provide essential nutrients that the body needs for optimal functioning.

By focusing on fiber's specific contribution to digestive health, it becomes clear why it is the correct answer regarding materials that play a significant role in digestion and elimination.