Erosion of Soil by a river mainly depends on -

Correct answer: Its speed at which it flows

Explanation: ✅ Correct Answer: C) Its speed at which it flows 📚 Explanation: The kinetic energy and cutting power of a river water mass depend directly on the velocity or speed at which it flows down a gradient. Higher speed increases the river's capacity to transport heavy sediments and cause mechanical erosion along its bed. This erosive force is most prominent during the youth stage of a river in hilly terrains due to steep slopes. Width and depth are outcomes of this continuous eroding process over time.