Question

which event can cause slumps, landslides, and mudflows to occur?
earthquakes
hurricanes
snowfalls
thunderstorms

Explanation:

Earthquakes can cause ground shaking that destabilizes slopes, leading to slumps, landslides, and mudflows. Hurricanes mainly bring strong winds and heavy rain (which can cause flooding but less directly trigger these mass movements as earthquakes do). Snowfalls don't typically cause such mass movements. Thunderstorms have rain but lack the ground - shaking force of earthquakes to trigger slumps, landslides, and mudflows as effectively.

Answer:

A. earthquakes