Final answer:
The spleen is part of the lymphatic system and plays a role in the regulation of red blood cells and the immune system. The correct option is C. spleen
Step-by-step explanation:
The spleen is part of the lymphatic system and plays a role in the regulation of red blood cells and the immune system.
The spleen is located in the upper left quadrant of the abdomen near the stomach and left kidney. It contains numerous phagocytes and lymphocytes that combat and prevent circulatory infections by killing and removing pathogens from the blood.
The spleen filters the blood, removes damaged red blood cells, and acts as a reservoir for immune factors. It is sometimes referred to as the "filter of the blood" due to its extensive vascularization and the presence of macrophages and dendritic cells that remove microbes and other materials from the blood. The correct option is C. spleen