Which acid is naturally present in the human stomach to aid digestion?

Explanation

The stomach produces hydrochloric acid, which helps break down food, activates digestive enzymes like pepsin, and kills harmful bacteria that enter with food. The stomach lining is protected from this strong acid by a layer of mucus. Excess stomach acid or a weakened protective lining can lead to conditions like acid reflux or ulcers. Explore more Everyday Science MCQs on mcqstutor to keep practicing.