A) This choice is incorrect because iron-deficiency anemia is not directly related to chronic inflammatory diseases; it is more commonly associated with blood loss or inadequate iron intake.

B) This choice is incorrect because hemolytic anemia is not specifically linked to chronic inflammatory diseases.

C) This choice is incorrect because aplastic anemia is characterized by bone marrow suppression and is not primarily associated with chronic inflammatory conditions.

D) This choice is correct. Anemia of chronic disease (ACD), also known as anemia of inflammation, is a type of anemia that occurs in the setting of chronic inflammatory diseases. It is typically caused by the body's response to the inflammation, leading to impaired red blood cell production and a shortened red blood cell lifespan.