Troposphere pollutant contains

Options

A. Dust
B. Water vapours
C. Mist
D. All of these

Answer

### Step-by-Step Solution:

1. **Understanding the Troposphere**:
- The troposphere is the lowest layer of Earth's atmosphere, extending from the surface up to about 8 to 15 kilometers high. It is where most of the weather phenomena occur.

2. **Identifying Pollutants**:
- Pollutants in the troposphere can include various substances that are present in the air. These can be solid particles, liquid droplets, or gases.

3. **Analyzing the Options**:
- **a. Dust**: Dust particles are solid pollutants that can be found in the troposphere. They originate from various sources, including soil erosion, construction activities, and natural events like volcanic eruptions.
- **b. Water Vapors**: Water vapor is a gaseous form of water present in the atmosphere. It is a significant component of the troposphere and plays a crucial role in weather and climate.
- **c. Mist**: Mist consists of tiny water droplets suspended in the air, which can also be considered a pollutant when it contains impurities or pollutants.
- **d. All of these**: This option suggests that all the mentioned components (dust, water vapors, and mist) are pollutants found in the troposphere.

4. **Conclusion**:
- Since dust, water vapors, and mist are all present in the troposphere and can be considered pollutants, the correct answer is **d. all of these**.

### Final Answer:
The troposphere pollutant contains **d. all of these**.

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