Final answer:
Celiac disease is caused by malabsorption due to an immune response to gluten, damaging the small intestine's lining and leading to symptoms that require a gluten-free diet for management.
Step-by-step explanation:
Among the conditions mentioned, Celiac disease is specifically caused by malabsorption due to an autoimmune disorder. People with celiac disease have an immune response to gluten, a protein found in wheat, barley, and rye. This immune response damages the lining of the small intestine, specifically the microvilli, leading to decreased nutrient absorption, chronic diarrhea, weight loss, and anemia. Individuals with this condition need to follow a strict gluten-free diet to manage their symptoms and prevent intestinal damage.