Which nutrients are considered energy-yielding?

Energy-yielding nutrients are those that provide energy when consumed and utilized by the body. The correct answer identifies fats, proteins, and carbohydrates, which are the three macronutrients fundamental to energy production.

Fats are the most calorie-dense of these macronutrients, providing 9 calories per gram, and play crucial roles in energy storage, insulation, and cellular structure. Carbohydrates, which offer 4 calories per gram, are typically the body's preferred energy source, particularly for high-intensity activities. Proteins also provide 4 calories per gram and are essential for muscle repair, immune function, and various metabolic processes, although they are primarily utilized for energy only when carbohydrates are not available.

In contrast, vitamins, minerals, and water do not yield energy. They support metabolic processes and overall health but do not provide calories. Fiber is also not an energy-yielding nutrient as the body does not digest it for energy, even though it plays a vital role in digestive health. Thus, the selection of fats, proteins, and carbohydrates encompasses all elements that directly contribute to energy production in the body.