Which substance, made up of indigestible polysaccharides, helps to move food through the digestive system?

The substance that is made up of indigestible polysaccharides and plays a crucial role in moving food through the digestive system is fiber. Fiber is a type of carbohydrate that the human body cannot digest, which helps to add bulk to the stool and promotes regular bowel movements. By aiding the movement of food through the intestines, fiber helps prevent constipation and supports overall digestive health.

In contrast, protein, carbohydrates, and fats are macronutrients that the body can digest and absorb. Proteins are made up of amino acids and are essential for building and repairing tissues; carbohydrates are a primary source of energy; and fats provide energy along with aiding in the absorption of certain vitamins. However, these macronutrients do not fulfill the same role as fiber in facilitating the movement of food along the digestive tract.