Proteins are the nutritional class which builds and maintains cells and tissues. The type are often called "structural" since they are like the scaffolding of cells and tissues.
Red Blood Cells i believe are not part of the immune system. They carry oxygenated blood to the organs of the body
The correct answer is C. The cousins are all within the normal range.
Eliminating junk food and not constantly eating snacks. If you don't eat these things, you will be eating a healthy diet.
