Its TRUE. You could end up hurting yourself if you exercise those muscles too much. Such as spraining them.
<span>Part A: Sickle cell anemia is an autoimmune disorder. It affects the white blood cells and its ability to clot during a cut or abrasion.
Part B: To avoid cancer, choice (C) would be most appropriate. Avoiding tobacco products and other carcinogens would lower one's cancer risk substantially.</span>