Erosion is the process of eroding or being eroded by wind, water, or other natural agents.
Carving is eroding a rock or other element to create an art.
Answer:
I think the main purpose of a narrative essay is to tell the reader about a event as story that the narrator experienced. When we read about a narrative essay, we usually read how a person or how a event happened and the person who tell us that he experienced it. So, that's why I think the main purpose of a narrative essay is to describe an event as a story .
C) Compass - Makes the most sense to me.... Hope this helps... :)