Given below are two statements, one is labeled as Assertion (A) and the other labeled as Reason (R).
Assertion (A): Universal Soil Loss Equation A = RKLSCP
Reason (R): Universal soil loss equation determination for the reduction of erosion to tolerable limits necessitates the adoption of properly planned cropping practices and soil conservation measures.
In light of the above statements, choose the correct answer from the options below:

Correct option is A

✅ Why option (a) is correct
Assertion (A) is true because:
· The Universal Soil Loss Equation (USLE) is correctly expressed as: A = R × K × L × S × C × P
· Where:
· A = Average annual soil loss
· R = Rainfall erosivity factor
· K = Soil erodibility factor
· L = Slope length factor
· S = Slope steepness factor
· C = Crop management factor
· P = Conservation practice factor
Reason (R) is true because:
· USLE is used to estimate soil erosion.
· Based on its estimation, cropping practices (C) and soil conservation measures (P) are planned.
· These practices help reduce soil erosion to tolerable limits.
Link between (A) and (R):
· The structure of USLE itself includes crop management and conservation practices, directly supporting erosion control.
· Hence, (R) correctly explains why USLE is formulated and applied, validating (A).
➡️ Therefore, both (A) and (R) are true and (R) is the correct explanation of (A).
❌ Why other options are incorrect
Option (b):
· Incorrect because the reason does explain the assertion.
Option (c):
· Incorrect because the reason is true, not false.
Option (d):
· Incorrect because the assertion itself is correct.
�� Key Points to Remember
· USLE predicts average annual soil loss, not single storm loss.
· Crop management ( C) and conservation practices ( P) are controllable factors.
· USLE is widely used in soil and water conservation planning.