Final answer:
The component that is not part of normal lymph is Red blood cells. Lymph contains water, plasma proteins, ions, and white blood cells, but not red blood cells, which are a primary component of the bloodstream.
Step-by-step explanation:
The component that is not a normal part of lymph is C) Red blood cells. Lymph is a clear fluid that is part of the body's immune system. It primarily consists of water, plasma proteins, ions, and white blood cells. Red blood cells are typically found in the bloodstream and not in the lymphatic fluid. The lymph serves to transport white blood cells to different parts of the body, aid in the removal of debris and pathogens, and maintain fluid balance.
Components such as water, plasma proteins, ions, and other substances transported in the lymph are essential for normal functioning of muscles and nerves, and for maintaining pH and osmotic balance. However, unlike blood plasma, lymph does not have red blood cells which are responsible for carrying oxygen to the body's tissues.