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B
Hydrochloric acid
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C
Amylase
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D
Pepsin
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Solution
The correct option is A Sodium bicarbonate When there is an upsurge in the amount of acid produced by the stomach, it can cause acidity. Acidity can also be caused by overeating, stress, unhealthy food habits, etc.
Now, sodium bicarbonate mixed with water acts as and an antacid (base) that neutralizes the excess acid.