What is the significance of a 'dirty bomb'?

The significance of a 'dirty bomb' lies in its combination of conventional explosives and radioactive material. This type of weapon uses conventional explosive mechanisms to disperse radioactive materials into the environment. The primary intent is not necessarily to cause mass destruction but to contaminate an area, leading to potential long-term health risks, disruption, and panic among the population.

The presence of radioactive material contributes to the psychological impact, enhancing the fear and concern surrounding the event. While causing physical harm is a possibility, the main goal is often to generate fear and chaos, making option B the most accurate description of a 'dirty bomb.'

The other choices misinterpret the full scope and impact of a dirty bomb; it is not limited to creating panic alone or functioning solely as a psychological weapon. Additionally, while certain containment might be necessary for response efforts, the effectiveness of a dirty bomb primarily relies on its explosive and dispersive properties rather than specialized containment.

Understanding this definition is crucial for emergency responders, as it affects their preparedness and response strategies in the event of such an attack.