A road was recently built through a mountain. The cliffs and steep slopes on either side of the road have large, loose rocks exposed.
Drivers on this road should be concerned because
A.
these rocks make the hillsides look ugly.
B.
gravity and erosion might cover the rocks back up again.
C.
gravity and erosion could cause the rocks to fall or slide onto the road.
D.
the road is not sturdy since these rocks were not placed underneath it.
