Which of the following is the best example of a heat conductor?

• A. Wood
• B. Plastic
• C. Glass
• D. Copper

Answer: (D)

Verified step by step guidance

1. Understand that a heat conductor is a material that allows heat to pass through it easily, meaning it has high thermal conductivity.
2. Recall that metals generally have high thermal conductivity because their free electrons can transfer energy quickly.
3. Compare the given options: wood, plastic, glass, and copper. Wood, plastic, and glass are nonmetals and typically poor conductors of heat (insulators).
4. Recognize that copper is a metal known for its excellent thermal conductivity, making it a very good heat conductor.
5. Conclude that among the options, copper is the best example of a heat conductor due to its metallic nature and high thermal conductivity.