Answer: Option C
Explanation:
Beach erosion can be defined as the erosion of the sand by the waves. These sand particles on the beach is eroded naturally due to high waves and severe strong winds and waves.
There are many other reasons because of which the beach erosion can take place. Building of sea walls, restricting the sand supply are some of them.
If there is fine weather and calm waves which is not enough strong to erode sand then it will not cause beach erosion.