Question

5 which mass movement poses the greatest risk to human life because it moves so quickly?
earthflow
slump
mudflow

Explanation:

Among the options, a slump (mass movement) typically has a relatively slow movement. Mudflow is a type of mass movement that involves the rapid flow of water - saturated soil and rock debris. Earthflow also moves, but generally not as rapidly as mudflow. Since the question asks which mass movement poses the greatest risk to human life because it moves so quickly, mudflow is the correct answer as its rapid movement can cause sudden and severe damage to human settlements and infrastructure.

Answer:

The option corresponding to mudflow (the third option, assuming the options are presented as: A. earthflow, B. slump, C. mudflow). So the answer is C. mudflow.