From the following which is the major nutrient of food?

Nutrients are the compounds in food that provide us with energy that facilitates repair and growth and helps to carry out different life processes. 

The major nutrients in the food are carbohydrates, protein, and fats. They are also called macronutrients as they provide energy to a living being for the function of the metabolic system. 

Vitamins and minerals are required in minor amounts and are called micronutrients.