Final answer:
Leukemia is a disorder of the bone marrow that results in the production of too few mature blood cells, specifically white blood cells. The condition can be acute or chronic, affecting the body's ability to fight off infections.
Step-by-step explanation:
Leukemia is a form of cancer classified as a disorder of the bone marrow, where too few mature blood cells are made. The correct answer is C) Bone marrow, blood cells. Leukemia involves an abundance of leukocytes and may affect either the myeloid line or the lymphoid line. In chronic leukemia, there is an accumulation of mature leukocytes that fail to die, while in acute leukemia, there is an overproduction of young, immature leukocytes. In both cases, the leukocytes do not function normally, affecting the body's ability to fight off infections or prevent serious bleeding. Treatment options for leukemia are available and can potentially prolong life or cure the disease.