Lightning rods are made of

Options

A. Copper
B. Plastic
C. Bakelite
D. Sand paper.

Explanation

**Step-by-Step Solution:**

1. **Understanding Lightning Rods**: Lightning rods are devices used to protect structures from lightning strikes by directing the electrical charge safely into the ground.

2. **Material Properties**: The effectiveness of a lightning rod depends on the material it is made from. The material must be a good conductor of electricity to allow the lightning's electrical charge to flow through it easily.

3. **Evaluating Options**: The options given are copper, plastic, blacklight, and sandpaper. We need to determine which of these materials is a good conductor of electricity.

4. **Analyzing Each Material**:
- **Copper**: Copper is known for its excellent electrical conductivity, making it a common choice for electrical wiring and lightning rods.
- **Plastic**: Plastic is an insulator, meaning it does not conduct electricity well.
- **Blacklight**: This term usually refers to a type of ultraviolet light and is not a material used for conductivity.
- **Sandpaper**: Sandpaper is also not a conductor; it is used for smoothing surfaces.

5. **Conclusion**: Based on the analysis, the best material for lightning rods is copper due to its high conductivity.

6. **Final Answer**: Therefore, lightning rods are made of copper.

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