Dev, a rag picker, was very happy to find a large roll of electric wires because they contained ______.

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Dev, a rag picker, was very happy to find a large roll of electric wires because they contained copper. Explanation: Copper is an excellent conductor of electricity, highly ductile and malleable, so it can be drawn into long, thin wires, and is strong and economical, making it the standard choice for electric wiring.

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