Answer

D. Incident Commander or Unified Command

Explanation

The question is asking who is responsible for establishing the objectives that guide the incident operations. The options provided are the Agency Administrator, Operations Section Chief, Planning Section Chief, and Incident Commander or Unified Command. In the context of incident management, the Incident Commander or Unified Command is the entity that has the overall responsibility for the incident. They are responsible for developing the incident action plan, which includes the objectives that will guide the incident operations. The Incident Commander or Unified Command is the one who has the authority and responsibility to make decisions and coordinate the response efforts. Therefore, the objectives that drive incident operations are established by the Incident Commander or Unified Command.