The process by which natural forces move weathered rock and soil from one place to another is called?

Landslides refer to the process by which natural forces move weathered rocks and soil from one place to another. This usually occurs on a slope where the failure of materials results to the movement of rock and soil. This debris is moved by the natural force of gravity which can cause massive destructions in areas that are highly elevated. 

You can google it. the answer is d. international recognition