The most non-polluting and efficient lighting device is:

Options

A. CFL
B. LED
C. Fluorescent light
D. Electric bulb

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the most non-polluting and efficient lighting device. This implies we need to consider both environmental impact and energy efficiency.

2. **Identifying Lighting Devices**: Common lighting devices include incandescent bulbs, fluorescent lamps, and LED (Light Emitting Diode) lights. We need to evaluate these options based on pollution and efficiency.

3. **Evaluating Incandescent Bulbs**: Incandescent bulbs are traditional lighting devices that use a filament to produce light. They are known for being less energy-efficient and have a shorter lifespan compared to other options.

4. **Evaluating Fluorescent Lamps**: Fluorescent lamps are more efficient than incandescent bulbs but contain mercury, which can be harmful to the environment if not disposed of properly.

5. **Evaluating LED Lights**: LED lights are known for their high energy efficiency and long lifespan. They consume significantly less power than both incandescent and fluorescent lights and do not contain harmful substances like mercury.

6. **Conclusion**: Based on the evaluation, LED lights are the most non-polluting and efficient lighting device available. They provide a sustainable option for lighting with minimal environmental impact.

**Final Answer**: The most non-polluting and efficient lighting device is LED (Light Emitting Diode).

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