__________ is a device used to protect buildings from the effect of lightning.

Options

A. Seismograph
B. Barometer
C. Lightning conductor
D. Insulation

Answer

**Step-by-Step Text Solution:**

1. **Identify the Purpose**: The question asks for a device that protects buildings from lightning.

2. **Understand the Device**: The device used for this purpose is known as a "lightning conductor."

3. **Function of the Lightning Conductor**: A lightning conductor is installed at the top of a building. Its primary function is to intercept lightning strikes.

4. **How it Works**: When lightning strikes, the lightning conductor absorbs the electrical charge. Instead of the lightning hitting the building directly, it is directed to the conductor.

5. **Connection to the Earth**: The lightning conductor is connected to the ground (earth). This allows the electrical charge from the lightning to flow safely into the earth, preventing any damage to the building.

6. **Conclusion**: Therefore, the answer to the question is that a "lightning conductor" is the device used to protect buildings from the effects of lightning.

**Final Answer**: Lightning conductor

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