Which statement correctly describes the management of an emergency scene?

The management of an emergency scene is critical to ensure safety, coordination, and effective response. The statement that accurately describes this situation is that the scene must be managed by the public safety agency with primary investigative authority. This is because these agencies are specifically trained and equipped to handle emergencies, ensuring that the appropriate protocols and procedures are followed.

They have the authority to make crucial decisions, coordinate resources, and communicate with other responding agencies to maintain control over the incident. Their expertise is essential in assessing the scene, determining the necessary response, and managing any potential hazards. This structured management is key to protecting the safety of individuals involved in the incident as well as the general public.

The other options tend to suggest delegating responsibility or allowing multiple agencies without specified authority, which could lead to confusion, lack of coordination, and potentially unsafe conditions at the scene. It's imperative for the agency with designated responsibility to take charge for a clear chain of command and effective emergency response.