Which type of anemia is associated with chronic kidney disease?
Correct Answer: D
Rationale: The correct answer is D: Erythropoietin deficiency anemia. Chronic kidney disease often leads to anemia due to decreased production of erythropoietin. This hormone, produced by the kidneys, stimulates red blood cell production in the bone marrow. Iron-deficiency anemia (choice A) is more commonly caused by insufficient dietary iron intake or chronic blood loss. Vitamin B12 deficiency anemia (choice B) is usually due to inadequate dietary intake, malabsorption, or pernicious anemia. Aplastic anemia (choice C) is a bone marrow failure disorder characterized by pancytopenia (decreased red blood cells, white blood cells, and platelets) rather than a deficiency in erythropoietin production.