Floods can cause tremendous damage.They can ruin houses,road and building.Floods can take down trees and cause mudslides.It often leaves mud,sand and debris behind.It can take months to clean up after a flood.What is the main idea of the paragraph?

A.Floods can cause a lot of damage.
B.Floods damage houses ang roads.
C.Flood cause mudslide.
D.Flood is a supernatural occurrence ​