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

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

Answer: (B)

A weapon of mass destruction is a weapon designed to cause large numbers of casualties or widespread damage. The statement that lists explosive, incendiary, poison, gas, or bombs best fits this idea because it names broad classes of devices that have been used or designed to inflict massive harm. The other options describe events or phenomena (a disease outbreak, radiation scenarios, or a cyber disruption) rather than weapons intended to cause mass casualties, so they don’t define WMD as a weapon.