How is a landslide linked to rapid deforestation on mountain slopes after a rainfall event?

Correct answer: Loss of roots reduces soil binding, allowing rapid runoff and slope failure

Direct answer: B. Vegetation reduces erosion in several ways: roots bind soil, stems and litter slow surface flow, and the canopy intercepts some rainfall. When forests are rapidly removed, the soil loses much of this mechanical support and surface water can move faster over the slope. During heavy rain, water may infiltrate and raise soil moisture and pore-water pressure, while runoff can detach and carry soil particles. Together, these changes can weaken the slope and trigger a landslide. A is wrong because trees do not stop all rainfall; they intercept and redistribute some of it. C is unrelated to the main mechanism. D is wrong because root loss and altered runoff create a clear physical connection, although geology, slope angle, rainfall intensity, and human excavation also influence the actual risk. Memory cue: roots reinforce; canopy slows.