Answer:
c. Slump
Explanation:
Mass wasting also known as mass movement is the downward movement of rocks, soil, regolith, debris or slumps along a slope. Mass wasting is a phenomenon backed by gravity .
Slump is a type of mass wasting that occurs as a result of slope failure in which rocks or mass of soil fall along a concave surface. Slump moves materials at larger quantity along a curved surface. Slumps occurs as a result of undercut or as a result of too much weight on the slope. The shape of the slumping rock is characterized by a crescent shaped scarp in a rock mass.
The picture below demonstrate slump
