The correct answer is option 1: Both the statements are individually true and Statement II is the correct explanation of Statement I.

Statement I states that hills with dense vegetation cover do not experience heavy soil erosion. This statement is true because the vegetation cover acts as a natural barrier that reduces the impact of rainfall, preventing the erosion of soil.

Statement II explains why dense vegetation cover helps to prevent soil erosion. It states that the vegetation cover aids in the infiltration of rainwater and in binding the soil. This statement is also true because the roots of plants help to hold the soil together, reducing the chances of it being washed away by rainfall. Additionally, the leaves and branches of plants create a canopy that slows down the force of falling raindrops, reducing the impact on the soil.

Therefore, both statements are true, and Statement II provides a valid explanation for why dense vegetation cover helps to prevent soil erosion.