Mud-Ball technique is used for

Options

A. minimizing the thermal pollution
B. minimizing synthetic fertilizer pollution
C. minimizing the water pollution
D. minimizing the oil pollution

Answer

### Step-by-Step Solution:

1. **Understanding the Mud-Ball Technique**:
- The mud-ball technique involves creating balls or clumps from mud. These balls are typically made with a small amount of fertilizer, often urea, mixed into the mud.

2. **Purpose of the Technique**:
- The primary aim of this technique is to reduce the amount of synthetic fertilizers used in agriculture, specifically in rice fields.

3. **Application in Agriculture**:
- The dry mud balls are placed in rice fields. This method allows for a controlled release of nutrients, which minimizes the risk of over-fertilization and reduces the environmental impact.

4. **Identifying the Type of Pollution Addressed**:
- By using a smaller amount of synthetic fertilizer, the mud-ball technique helps to minimize synthetic fertilizer pollution. This is important because excessive use of synthetic fertilizers can lead to various environmental issues, including water pollution and soil degradation.

5. **Conclusion**:
- Therefore, the correct answer to the question "Mud-Ball technique is used for" is **minimizing synthetic fertilizer pollution**.