Soil conservation can be best achieved by having

Options

A. Windscreens
B. Good plant covers
C. Restricted human activity
D. Low rainfall

Explanation

### Step-by-Step Solution:

1. **Understanding Soil Conservation**: Soil conservation refers to the practices that prevent soil erosion and degradation, ensuring that soil remains fertile and productive.

2. **Identifying Factors Affecting Soil Erosion**: Soil erosion can be caused by various factors, primarily wind and rainfall. These natural elements can wash away or blow away the topsoil, which is crucial for plant growth.

3. **Evaluating Options for Soil Conservation**:
- **Wind Screens**: These can help reduce wind speed but may not be sufficient alone for soil conservation.
- **Good Plant Covers**: Vegetation, such as trees and plants, plays a significant role in protecting soil. Their roots bind the soil, preventing erosion, and they also absorb water, reducing runoff.
- **Restricted Human Activity**: While limiting human interference can help, it is not a direct method of soil conservation.
- **Low Rainfall**: This is a climatic condition and does not contribute to soil conservation efforts.

4. **Conclusion**: Among the options provided, "Good Plant Covers" is the most effective method for soil conservation. Vegetation not only protects the soil from erosion but also enhances its fertility by maintaining moisture and nutrients.

5. **Final Answer**: Soil conservation can be best achieved by having **good plant covers**.