Answer the following question given this paragraph: 

Less dramatic types of mass wasting move Earth materials slowly down a hillside. Slump is the sudden movement of large blocks of rock and soil down a slope. ( Figure below ). All the material moves together in big chunks. Slumps may happen when a layer of slippery, wet clay is underneath the rock and soil on a hillside. Or they may occur when a river (or road) undercuts a slope. Slump leaves behind crescent-shaped scars on the hillside.


Q: What is the term for the sudden movement of large blocks of rock and soil down a slope?

 Choices:

- sludge

- torrent

- hurricane

- slump

A:
slump
