Question

examples of alloys include
brass, steel, and colored gold
carbon, oxygen, and nitrogen
neon, argon, and helium
plastic, oil, and carbon dioxide

Explanation:

An alloy is a mixture of two or more metals or a metal and a non - metal. Brass is an alloy of copper and zinc, steel is an alloy of iron and carbon, and colored gold is an alloy with other metals added to pure gold for color. Carbon, oxygen, nitrogen are elements; neon, argon, helium are noble gases; plastic, oil, carbon dioxide are not alloys.

Answer:

A. brass, steel, and colored gold