Step 1: Concept
RUSLE is an updated mathematical model used to predict the long-term average annual rate of soil erosion.
Step 2: Meaning
It improves upon the original USLE by providing more sophisticated ways to calculate various factors.
Step 3: Analysis
While RUSLE considers topography and rainfall, its primary advancement was in the more detailed handling of the C-factor (cover-management) and P-factor (support practices).
Step 4: Conclusion
This allows for better assessment of how specific farming and conservation practices impact soil loss.
Final Answer: (B)