Concept:Rain-induced soil erosion occurs when rainfall detaches and removes soil from the land surface.
Explanation:Scanty vegetation leaves the soil exposed to the direct impact of raindrops.
Tropical rainstorms bring heavy and intense rainfall, which increases runoff and erosion.
Steep slopes allow rainwater to flow quickly, carrying soil away.
Aridity, however, means a long-term lack of rainfall or moisture.
Since erosion by rain requires rainfall, soil erosion cannot take place in an arid area.
Answer:B. aridity