Step 1: Understand erosion resistance.
Erosion resistance refers to crops that help reduce soil erosion due to their root system and ground coverage.
Step 2: Match with crop features.
Bajra (pearl millet) has deep roots, strong soil-binding ability, and drought tolerance, making it highly erosion resistant.
Step 3: Eliminate wrong options.
(A) Maize – though widely grown, it is not erosion resistant.
(C) Urad – pulse crop, not effective for erosion control.
(D) Wheat – seasonal crop, roots not as strong for erosion control.
Step 4: Conclusion.
Hence, Bajra is the correct erosion-resistant crop.