A local community has land for a park located along a river. The bank is starting to erode. Citizens want to use ideas based on science to solve the erosion problem. Which idea would best help this community protect the riverbank from eroding?

A. Adding more soil to the bank will protect existing land from eroding away.
B. Watering the bank daily will make existing soil heavier so it will not erode.
C. Building a rock wall along the bank will keep soil in place so water cannot erode it away.
D. Allowing individuals to walk near the edge of the bank will compact the soll so it will not erode,

if there is something other then the answer just comment it.​