3. Formation of blodd cells. That is your answer. The reason it is right is that a balance of red blood cells (rbc) and white blood cells (wbc) to maintain a homeostatic enviroment or balance between acids and alkyalines in the body. Homeostasis - the balance of acids and akalyne also known as a reference to ph balance. In summary, a homeostatic enviroment results from a balance of ph. Thus, bone marrow and the