Answer;
C. waves washing over rocks on the beach
Step-by-step explanation;
-Erosion is a natural process that forms part of the lifecycle of sites, resulting from the action of wind or water. It is a geological process in which earthen materials are worn away and transported by natural forces such as wind or water.
-Example of erosion; Wind carries small pieces of rock away from the side of a mountain, waves washing over rocks on the beach, etc.