What does rusting specifically refer to?

Rusting specifically refers to the corrosion of iron, which occurs when iron reacts with oxygen and moisture in the environment. This process leads to the formation of iron oxides, commonly known as rust. The presence of water accelerates this reaction, as it acts as an electrolyte, facilitating the transfer of electrons necessary for oxidation to occur. Therefore, rusting is a particular type of corrosion that is defined by the specific chemical reactions involving iron, oxygen, and water.

The other options refer to different processes or metals. Corrosion of aluminum, while it can occur, is not termed rusting and involves different chemical reactions. The oxidation of metals in a broader sense encompasses many reactions, but rusting is specifically linked to iron. Burning of iron products does not describe corrosion; instead, it involves combustion, which is a different chemical reaction entirely. Thus, the definition of rusting is accurately captured by the process described in the correct answer.