The correct answer is D. Zinc.
German silver is an alloy of copper, nickel, and zinc. It is often used in place of silver because it is less expensive and has similar properties. German silver is a white, silver-colored alloy that is hard and corrosion-resistant. It is used in a variety of applications, including coins, jewelry, and electrical components.
Copper is a reddish-brown metal that is used in a variety of applications, including electrical wiring, plumbing, and coins. Nickel is a silvery-white metal that is used in a variety of applications, including coins, jewelry, and stainless steel. Silver is a white metal that is used in a variety of applications, including jewelry, silverware, and coins.