The use of baking soda

Baking soda is also used with cold water to remove surface rust. (Hot water can corrode steel). It is also useful when mixed with warm water to clean tea and coffee stains from the inside of mugs. Baking soda also works to unclog a sink. Sprinkle a few teaspoons of baking soda down the drain and splash some white vinegar on top.

Explanation:

Sodium bicarbonate reduces stomach acid. It is used as an antacid to treat heartburn, indigestion, and upset stomach. Sodium bicarbonate is a very quick-acting antacid.

the answer is option a.

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