mr. garcia uses magnets to hold a poster on a steel filing cabinet because a main component of steel…

mr. garcia uses magnets to hold a poster on a steel filing cabinet because a main component of steel is\niron.\ncarbon.\nplastic.\nglass.
Answer
Brief Explanations:
Steel is an alloy mainly composed of iron and carbon. Magnets attract iron - based materials. Carbon, plastic, and glass are not attracted by magnets. Iron is the component that allows the magnet to hold the poster on the steel cabinet.
Answer:
A. iron