CORRECT ANSWER is ZINC.Galvanisation is a method of protecting steel and iron from rusting by coating them with a thin layer of Zinc.The galvanizing process consists of three stepsSurface preparationFuxingGalvanizingGalvanizationGalvanization is the process of applying a protective layer of zinc to a metal.It is a very common method of preventing the rusting of iron.This can be done by dipping the metal to be protected in HOT, molten zinc or by the process of electroplating.The protection of iron and steel from corrosion by coating with molten zinc. The zinc coating protects from the atmosphere the part’s surface, avoiding corrosion and weathering.Material is loaded onto jigs before being immersed in molten zinc at about 450 degrees until the working temperature is the same as zinc.During this process, the molten zinc reacts to a series of zinc/iron alloys with the steel surface.Galvanization helps extend the life of steel parts by forming a membrane between the metal and the air, preventing the accumulation of iron oxide on the steel layer.Galvanization also offers superior corrosion resistance to ENVIRONMENTALLY exposed parts.