Red beans and rice, peanut butter and whole-grain bread, and bean burritos are all examples of

These are  all examples of different food sources such as proteins, fats, carbohydrates, and fibers.

Explanation:

Red beans are a good source of plant proteins. It is also called kidney beans which are available in many kinds - white, cream, spotted, red beans. They also contain fibers, some good carbohydrates. They help in weight loss and provide protein to the boy.

Rice is the major source of carbohydrates. It gives energy to the body. There is also a variety of rice - white, brown, red rice. Rice also provides fats, proteins, minerals, and fibers. Brown rice is more beneficial than white rice as it has fewer carbs.  

Peanut butter is a rich source of fats. It is high in calories. But taking less amount of it is beneficial for health. Whole-grain bread is a good source of fibers and proteins. The bread made with whole grains has bran and germ. Brans has fibers and antioxidants. The germ provides vitamins and proteins and some fats. It is an example of a balanced diet.

Bean burritos are used as stuffings of many foods. They are good sources of protein. Bean burritos along with meat provide good fibers, proteins.