Which of the following slope failures is least likely to cause casualties?

A) rock avalanche
B) debris flow
C) creep
D) rock slide
E) rock fall

Rock Avalanche

is a rapid, massive landslide consisting of rock debris flowing down a slope.

Debris Flow

A fast-moving mass of loose mud, rocks, and water that flows down a slope, often triggered by heavy rain or rapid snowmelt.

Rock Slide

A type of mass wasting event where rocks and debris slide rapidly down a slope, often triggered by rain, earthquakes, or volcanic activity.