Which of the following refers to sweet white powder often used in baking?

The description of a sweet white powder commonly used in baking aligns perfectly with sugar. In baking, sugar serves multiple purposes: it adds sweetness, helps with browning, and contributes to the texture of baked goods. Granulated sugar, which is the typical form referred to in this context, dissolves well in liquids and integrates smoothly into batters and doughs, enhancing the overall flavor profile of recipes.

Flour, while essential in baking, is primarily the base ingredient that provides structure and does not have a sweet taste. Salt is used mainly for flavor enhancement and preservation but is not sweet at all. Baking soda, on the other hand, is a leavening agent that reacts with acidic components in recipes to create carbon dioxide gas, which causes dough to rise, but it also does not impart sweetness. Therefore, sugar stands out as the sweet ingredient that is crucial in many baked items.