which of these is an example of a physical change?\no sugar, when heated, producing carbon dioxide and…

Brief Explanations:

A physical change is a change in which the substance's chemical composition remains the same. When solid ice turns into liquid water upon heating, it is a phase - change (from solid to liquid) and the chemical substance is still water ($H_2O$). The other options involve chemical reactions where new substances are formed. For example, sugar producing carbon dioxide and water is a chemical reaction, sodium reacting with chlorine to form sodium chloride is a chemical reaction, and aluminum forming aluminum oxide in air is a chemical reaction.

Answer:

solid ice, when heated, turning into liquid water