To neutralize gastric juices in your stomach, antacids contain bases. Is the answer is option A.
Explanation:
The presence of hydrochloric acid inside the stomach makes the food very acidic and sometimes it is also considered to be as acidity in stomach. It can utilize this acidity of the food bases are required from outside of the body. For this work antacids are the best option to be used.
In antacid there is a presence of base which is helpful for making the acidic food neutralize for the further process. Milk of magnesia is very common example of antacid.
