Which macronutrients are necessary for animal diets?

The correct choice of macronutrients that are necessary for animal diets consists of carbohydrates, proteins, and fats. These three macronutrients play essential roles in maintaining the health and functionality of animals.

Carbohydrates serve as a primary energy source for animals. They are broken down into glucose, which is vital for cellular functions and overall metabolism. A diet rich in carbohydrates helps in maintaining appropriate energy levels for growth, reproduction, and daily activities.

Proteins are crucial for growth and development, particularly in young animals. They are made up of amino acids, which are the building blocks needed for tissue repair, muscle development, and enzyme production. A protein-rich diet supports various biological processes and the maintenance of a healthy immune system.

Fats, while providing a concentrated energy source, also assist in the absorption of fat-soluble vitamins (A, D, E, and K). They contribute to essential fatty acid requirements and help in the generation of body heat and hormone production.

In contrast, the other choices contain elements that, while important, do not encompass the three essential macronutrients needed for a balanced animal diet. Vitamins and minerals, while essential in smaller quantities, are classified as micronutrients rather than macronutrients. Therefore, a diet that includes carbohydrates