Which statement best describes a Weapon of Mass Destruction (WMD)?

• A. Any explosive, incendiary, poison, gas, or bomb
• B. Any event involving only a disease organism
• C. Any non-fire emergency designed to emit radiation
• D. A cyber attack causing mass disruption

Answer: (A)

A Weapon of Mass Destruction is a weapon designed to cause mass casualties and wide-scale damage. The statement listing explosive, incendiary, poison, gas, or bomb fits this idea because it names device types capable of creating large blasts or releasing toxic substances that can affect many people, which is the defining feature of WMDs. The other descriptions describe events or scenarios rather than devices intended to inflict mass harm: an incident involving a disease organism is not a weapon, a radiological-emission emergency is a risk scenario rather than a weapon, and a cyber attack is a digital threat without the physical mass-destruction aspect.