Pollution can be controlled by

Options

A. Sewage treatment
B. Checking atomic blasts
C. Manufacturing electrically operated vehicles
D. All the above

Answer

To answer the question "Pollution can be controlled by," we can break down the options provided and analyze how each contributes to pollution control.

### Step-by-Step Solution:

1. **Understanding Pollution Types**:
- Pollution can be categorized into various types such as air pollution, water pollution, and radioactive pollution. Each type requires specific strategies for control.

2. **Option Analysis**:
- **Sewage Treatment (CBH Treatment)**:
- Sewage treatment processes, such as those in sewage treatment plants (STPs) or effluent treatment plants (ETPs), help in treating wastewater before it is released into water bodies. This prevents sewage pollution and protects aquatic ecosystems.
- **Checking Atomic Blast**:
- Preventing atomic blasts or nuclear explosions can significantly reduce radioactive pollution. This is crucial for protecting human health and the environment from harmful radiation.
- **Manufacturing Electrically Operated Vehicles**:
- Electrically operated vehicles (EVs) produce no tailpipe emissions, which helps in reducing air pollution caused by conventional vehicles. This contributes to better air quality in urban areas.

3. **Conclusion**:
- Each of the options provided contributes to controlling different types of pollution. Therefore, the correct answer to the question is **"all of the above."** This means that all the mentioned methods are effective in controlling pollution.

### Final Answer:
Pollution can be controlled by all of the above methods: sewage treatment, checking atomic blasts, and manufacturing electrically operated vehicles.

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