Name the device used to protect building from the effect of lightning.

Options

A. Metallic conductor
B. Electrolytic conductor
C. Lightning conductor
D. None of these

Answer

**Step-by-Step Solution:**

1. **Identify the Purpose**: The question asks for a device that protects buildings from lightning. Understanding the purpose is crucial to finding the correct answer.

2. **Consider Common Devices**: Think about devices that are commonly used for lightning protection. This could include various types of conductors or grounding systems.

3. **Recall the Correct Device**: The device specifically designed for this purpose is known as a "lightning conductor." It is essential to remember that this is a specialized device.

4. **Understand the Functionality**: A lightning conductor typically consists of a metallic rod that is taller than the building it protects. This rod is installed during the construction of the building.

5. **Installation Details**: The lightning conductor is installed in the walls of the building, with one end of the rod exposed to the air and the other end buried deep in the ground.

6. **Explain the Mechanism**: When lightning strikes, the lightning conductor provides a safe pathway for the electric charges to travel directly to the ground, thereby protecting the building from damage.

7. **Conclude with the Answer**: Therefore, the device used to protect buildings from the effects of lightning is called a "lightning conductor."

---