Question

peptic ulcer disease does not occur in the:
a stomach.
b duodenum.
c colon
d esophagus.

Explanation:

Peptic ulcer disease is mainly associated with areas exposed to acid - pepsin secretions. The stomach (gastric ulcers), duodenum (duodenal ulcers), and esophagus (e.g., in cases of gastro - esophageal reflux leading to peptic esophagitis) can be affected. The colon is not typically a site for peptic ulcer disease as it is not in the same acid - pepsin environment as the upper gastrointestinal tract.

Answer:

C. colon