Which of the following is NOT a primary energy source for the body?

The statement that minerals are not a primary energy source for the body is accurate because minerals play a different role in the process of metabolism and energy production. While carbohydrates, fats, and proteins are macronutrients that can be metabolized to produce energy, minerals are inorganic elements that contribute to various physiological functions such as bone health, nerve transmission, and enzyme activity, but they do not provide energy in the form of calories.

Carbohydrates and fats are the body's main sources of energy, particularly during physical activity. Carbohydrates are preferred during high-intensity exercise because they can be rapidly converted to glucose, while fats are utilized more during prolonged, lower-intensity activities. Proteins can be used for energy but are primarily involved in tissue repair and growth rather than serving as a primary fuel source. Therefore, the distinction lies in the fact that while carbohydrates, fats, and to a lesser extent proteins, can be converted into energy, minerals do not contribute directly to energy production in this way.