Which of the following concepts dictates that each fire fighter answer to only one supervisor?

Unity of command is a fundamental principle in fire service and management that ensures each subordinate reports to only one supervisor. This concept is crucial for maintaining clear communication and direction within an organization, preventing confusion that can arise when an individual receives orders from multiple supervisors. By adhering to this principle, a fire department can ensure that responsibilities are well-defined, enhancing accountability and efficiency during operations.

When firefighters know they have a single point of contact for their instructions, it streamlines the decision-making process and helps prevent conflicts in authority. This is particularly important in high-stress situations, such as emergency response, where clear commands can significantly impact operational effectiveness and safety. The other concepts, while important in management, do not emphasize this aspect of command structure.