Which of the following is/are the most important sources of nutrition for humans?

The components of food known as nutrients keep the body healthy and enable it to function. Carbohydrates, proteins, and fats make up the majority of a person's diet. Vitamins and minerals are essential nutrients that are needed in lower amounts. 

Water and fiber are also on the list. The variety of foods in our diets should provide all the nutrients we need in the proper amounts. 

A balanced diet is one that includes all of these.