What action should you take if you receive a bomb threat?

When you receive a bomb threat, the most appropriate action is to call 911 and inform a supervisor. This response is correct because it ensures that the authorities are immediately involved in handling the situation, which is critical for safety. Law enforcement and bomb squad professionals are trained to manage such threats, assess any potential danger, and take necessary precautions to ensure the safety of all individuals in the vicinity.

Informing a supervisor is also essential, as they play a key role in coordinating the response within the organization and managing the potential evacuation or lockdown procedures. This combined approach leverages both emergency services' expertise and the organization's internal protocols.

In contrast, evacuating the building immediately without coordinating with authorities might result in chaos and could expose individuals to danger, especially if there is an actual bomb present. Contacting the media would divert attention away from critical safety protocols and could also further alarm individuals unnecessarily. Attempting to defuse the situation personally is highly inappropriate, as it can put oneself and others at an even greater risk; trained professionals are the only ones equipped to handle such events safely.