Step 1: Bronze Definition.Bronze is a metal alloy, mainly copper-based.
Step 2: Bronze Alloying Elements.Traditionally, bronze is an alloy of copper and tin (A & D). The term also covers other copper alloys. Modern bronzes may contain elements like zinc (C) for property changes. Commercial bronze, for example, is 90% copper and 10% zinc. The best answer combines the main components (Copper, Tin) with a typical addition (Zinc).