What is the primary function of carbohydrates in the diet?

Carbohydrates primarily serve the crucial function of providing energy, which makes them a fundamental component of a balanced diet. When consumed, carbohydrates are broken down into glucose, which is the body’s main energy source. This glucose is used by cells for immediate energy needs or stored in the liver and muscles as glycogen for later use. Given that the brain also relies heavily on glucose for optimal functioning, adequate carbohydrate intake is essential for maintaining mental and physical performance.

While other nutrients have their roles, the primary contribution of carbohydrates is the provision of energy, which supports various bodily functions and activities. The other options reflect important aspects of nutrition, such as protein supporting growth and repair, fiber aiding digestion, and fats playing a role in body temperature regulation, but these functions do not encompass the primary role of carbohydrates as energy providers.