Which volcanic hazard poses the greatest threat to humans?

Question

Quizplus · Accepted Answer

Pyroclastic flows are the most dangerous volcanic hazard as they are a high-speed mixture of hot gas, ash, and volcanic rocks that can travel at speeds of up to 450 mph, incinerating everything in their path. They are responsible for the most fatalities during volcanic eruptions. The other options (flowing lava, falling ash, and volcanic gas) can be hazardous, but typically have less immediate impact on human safety.

Which Volcanic Hazard Poses the Greatest Threat to Humans