What defines standard activities performed by the Incident Commander to achieve tactical objectives?

The correct answer highlights the "Functions of command" as it specifically refers to the defined activities and responsibilities that an Incident Commander undertakes to achieve desired tactical objectives during an incident. In the context of incident management, functions include decision-making, resource allocation, and the overall coordination of operations to ensure effective incident response.

The Incident Commander needs to clearly delineate their functions to manage the various complexities of an incident. This encompasses establishing a clear command structure, maintaining communication with all stakeholders, and ensuring that the tactical objectives align with the overarching strategic goals of the response effort. By focusing on functions, the Incident Commander can implement practical strategies that guide the operational response.

The other options, while related to command, do not capture the dynamic nature of the specific activities undertaken during an incident. Responsibilities of command relate more to the obligations of the commander, objectives of command address the goals set for the incident response, and protocols of command refer to the established procedures. None of these alternatives emphasize the operational activities that are crucial for achieving tactical objectives in real-time incident management.