Which of the following cannot prevent soil erosion ?

Options

A. reforestation
B. deforestation
C. silviculture
D. plantation

Answer

To answer the question "Which of the following cannot prevent soil erosion?", we need to analyze the options provided. The key concepts to understand are the causes of soil erosion and the methods that can prevent it.

### Step-by-Step Solution:

1. **Understand Soil Erosion**: Soil erosion is the process where the top layer of soil is removed due to various factors like wind, water, and human activities. This leads to loss of fertile land.

2. **Identify Causes of Soil Erosion**: One of the major causes of soil erosion is deforestation. When trees are cut down, the soil loses its protective cover, making it more susceptible to erosion.

3. **Evaluate Prevention Methods**:
- **Deforestation**: This is the act of cutting down trees, which does not prevent soil erosion. In fact, it contributes to it.
- **Silviculture**: This is a practice that involves managing forest growth, including planting new trees after cutting some down. This can help prevent soil erosion.
- **Plantation**: Planting trees and vegetation helps to hold the soil together, preventing erosion.

4. **Conclusion**: Among the options, deforestation is the only one that cannot prevent soil erosion. Instead, it exacerbates the problem.

### Final Answer:
Deforestation cannot prevent soil erosion.

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