Answer: B) Milk of magnesia is a base that neutralizes the excess acid present in the stomach, thus relieving acidity.
Step-by-step explanation:
Milk of magnesia, which is magnesium hydroxide, is used to cure stomach acidity. The mode of action of this drug is that milk of magnesia is a base that neutralizes the excess acid present in the stomach, thus relieving acidity. The answer is letter B.