Which statement best describes the function of fibre?

• A. Provide energy
• B. Aid in digestion
• C. Maintain hydration
• D. Prevent constipation and reduce obesity

Answer: (D)

Fibre is a non-digestible carbohydrate that travels through the digestive system largely intact. Its main role is to add bulk to the stool and, by absorbing water, help soften stools and speed their passage, which prevents constipation. It also contributes to weight management because high-fibre foods tend to be more filling and have lower energy density, helping to control energy intake and reducing obesity risk. It doesn’t provide energy itself, so it’s not about supplying calories, and while it can influence stool hydration, its primary function isn’t maintaining overall body hydration. That combination makes preventing constipation and aiding in weight management the best description of fibre’s function.