Which is the most correct reason linking forest conservation with soil conservation?

Correct answer: Tree roots bind soil and reduce fast runoff of rainwater

The direct answer is C: tree roots bind soil and reduce the fast runoff of rainwater. Forest conservation keeps vegetation cover on the ground. Roots hold soil particles together, while leaves, branches and leaf litter soften the impact of raindrops. The roots and organic matter also help water enter the soil, so less water rushes across the surface and carries soil away. This reduces erosion and protects fertile topsoil. Option A is wrong because forests do not stop soil formation; organic matter can support it. Option B is wrong because trees do not always blow soil away; their roots usually hold it. Option C is correct because it gives both important processes: binding soil and reducing rapid runoff. Option D is wrong because trees generally reduce, rather than always increase, erosion. The word “always” makes the extreme alternatives especially unreliable. Memory cue: forest cover means firm soil and slower runoff.