Correct Answer: Copper

Solution : The correct option is Copper .

Copper is a chemical element (symbol Cu) often used in its pure, elemental form. While copper can be alloyed with other elements to form alloys like brass (copper and zinc) and bronze (copper and tin), it is also used in its unalloyed state for various applications, such as electrical wiring, plumbing, and architectural elements. Steel, brass and bronze are alloys, meaning they are composed of two or more elements, while copper is pure.