Which of the following is a type of macronutrient?

Carbohydrates are classified as a type of macronutrient because they are one of the three primary nutrients that provide energy, the others being proteins and fats. Macronutrients are essential for the body's functioning and are required in larger amounts compared to micronutrients, which include vitamins and minerals. Carbohydrates serve as a vital energy source that fuels bodily functions and physical activity. They can be found in foods such as grains, fruits, vegetables, and legumes, and they are significant for maintaining energy levels during exercise and daily activities.

This distinction is important as it helps in understanding dietary needs, guiding individuals in making healthier food choices that align with their energy requirements and overall health goals. Other options listed do not fit under the macronutrient category; vitamins and minerals are micronutrients, and antioxidants are compounds that may benefit health but are not classified as macronutrients.