What is the primary function of carbohydrates in the diet?

The primary function of carbohydrates in the diet is to provide the body with a quick source of energy. Carbohydrates are one of the macronutrients essential for human health, and they are particularly important as a readily available energy source. When consumed, carbohydrates are broken down into glucose, which is then used by the body’s cells for energy. This is especially critical during exercise and physical activities, where quick bursts of energy are often needed.

While carbohydrates serve other roles, such as contributing to digestive health through fiber, their main and most immediate function is energy provision. This is why athletes and individuals engaged in regular physical activity often focus on carbohydrate intake, as it fuels their performance and aids in recovery.

The other options refer to different macronutrients or bodily functions. For example, repairing and building tissues is primarily the role of proteins. Producing enzymes and hormones is also a function of proteins and some vitamins. Maintaining fluid balance involves the role of water, electrolytes, and certain minerals rather than carbohydrates. Thus, the focus of carbohydrates as a quick energy source distinctly highlights their main role in nutrition.