**Core Concept**
Gluten-sensitive enteropathy, also known as celiac disease, is a chronic autoimmune disorder characterized by an immune reaction to gluten, a protein found in wheat, barley, and rye. This reaction leads to inflammation and damage in the small intestine, impairing nutrient absorption.

**Why the Correct Answer is Right**
The correct answer is associated with the pathophysiology of celiac disease, which involves an abnormal immune response to gluten. This response triggers the activation of T-cells, which release cytokines and lead to the activation of zonulin, a protein that increases intestinal permeability. The resulting inflammation and damage to the villi in the small intestine impair the absorption of nutrients, including vitamins and minerals.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is not directly related to the pathophysiology of gluten-sensitive enteropathy. While stress can exacerbate symptoms of celiac disease, it is not a primary cause of the condition.
**Option B:** This option is incorrect because it is more commonly associated with irritable bowel syndrome (IBS), a functional gastrointestinal disorder characterized by chronic abdominal pain and changes in bowel habits. While some patients with IBS may also have celiac disease, the two conditions are distinct.
**Option C:** This option is incorrect because it is not a primary cause of gluten-sensitive enteropathy. While some patients with inflammatory bowel disease (IBD) may also have celiac disease, the two conditions are distinct and have different underlying pathophysiologies.

**Clinical Pearl / High-Yield Fact**
Celiac disease can be difficult to diagnose, as symptoms can be nonspecific and may include fatigue, diarrhea, and weight loss. However, a simple blood test can detect the presence of certain antibodies, and a biopsy of the small intestine can confirm the diagnosis.

**Correct Answer:** D