Which event is clearly a human-made disaster?

• A. A chemical spill from storage tanks that contaminates water.
• B. A tsunami generated by a submarine quake.
• C. A hurricane making landfall.
• D. A flood caused by heavy rain.

Answer: (A)

Human-made disasters come from human actions or technology failures rather than natural forces. A chemical spill from storage tanks contaminating water fits this because it originates in industrial infrastructure and management, a result of human activity. The other scenarios are natural phenomena: tsunamis caused by an undersea quake, a hurricane making landfall, and floods from heavy rain all arise from natural processes, even though humans may suffer consequences from them. So the chemical spill is the clear example of a human-made disaster.