What is the term for a non-digestible, non-essential, plant-based polysaccharide that aids in digestion?

The term for a non-digestible, non-essential, plant-based polysaccharide that aids in digestion is fiber. Fiber is a crucial component of a healthy diet, primarily found in fruits, vegetables, whole grains, and legumes. While it does not provide essential nutrients or calories since it is not digested by the human body, it plays a significant role in promoting healthy digestion. Fiber helps regulate bowel movements, prevents constipation, and contributes to overall gut health by supporting the growth of beneficial gut bacteria. Additionally, it can help to manage cholesterol levels and promote a feeling of fullness, which can assist in weight management.

Starch, sugar, and protein do not match the characteristics described in the question. Starch is a digestible carbohydrate that provides energy, sugars are simple carbohydrates that can be quickly absorbed for energy, and proteins are essential nutrients made of amino acids critical for various bodily functions. Therefore, fiber is the only option that fits the description of being a non-digestible, non-essential polysaccharide that supports digestion.