Which Statement Best Describes Slumping, a Mass Wasting Process

Multiple Choice

Which statement best describes slumping, a mass wasting process?

A) A mass of soil or regolith becomes saturated with water and suddenly flows downhill to the base of the slope.
B) Blocks of hard bedrock rapidly slide downhill along fracture surfaces.
C) A block or blocks of unconsolidated regolith slide downhill along a curved slip surface.
D) The soil and regolith move downhill very slowly.