Which of these actions can directly lead to air pollution?

Options

A. Burning plastic wastes
B. Dumping plastic wastes on land
C. Throwing plastic wastes in water
D. Clogging of drain pipes due to plastic wastes

Explanation

### Step-by-Step Solution:

1. **Understanding Air Pollution**: Air pollution refers to the presence of harmful substances in the air that can cause health problems and environmental damage. Common sources include emissions from vehicles, factories, and burning waste.

2. **Analyzing the Options**:
- **Option 1: Clogging of drain pipes due to plastic waste**: This action relates to water drainage issues and does not directly contribute to air pollution.
- **Option 2: Throwing plastic waste in water**: This leads to water pollution, not air pollution.
- **Option 3: Dumping plastic waste on land**: While this contributes to environmental pollution, it does not directly cause air pollution.
- **Option 4: Burning of plastic waste**: This action releases harmful gases and pollutants into the air, which directly contributes to air pollution.

3. **Conclusion**: After analyzing all options, the action that directly leads to air pollution is **burning of plastic waste**.

### Final Answer:
The action that can directly lead to air pollution is **burning of plastic waste**.

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