Correct Answer: sodium hydrogen carbonate

Solution : The correct option is sodium hydrogen carbonate .

Baking soda is the common name for sodium bicarbonate, which is a chemical compound with the formula NaHCO ₃ . It is a white, crystalline powder that is commonly used as a leavening agent in baking. When baking soda is combined with an acid (such as vinegar or lemon juice) and moisture, it produces carbon dioxide gas, which causes dough or batter to rise.