Correct Answer: (1) Chromium
Solution:Stainless steel is a metal alloy, made up of steel mixed with elements such as chromium, nickel, molybdenum, silicon, aluminum, and carbon. Chromium, a hard transition element, is essential for the production of stainless steel since it gives stainless steel its corrosion resistance. In general, the higher the chromium content, the more corrosion-resistant the steel.