Name the most widely used device to remove particulate matter.

Explanation

**Step-by-Step Solution:**

1. **Identify the Device**: The question asks for the most widely used device to remove particulate matter from the air.

2. **Recognize the Correct Answer**: The electrostatic precipitator is identified as the correct device for this purpose.

3. **Understand the Functionality**: The electrostatic precipitator uses electricity to remove solid pollutants from the air. It is primarily used in industrial settings where large amounts of particulate matter are produced.

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