Final answer:
The Incident Commander is responsible for setting the strategic incident objectives in an emergency response situation.
Step-by-step explanation:
The individual who is responsible for determining the strategic incident objectives in an emergency response situation is the Incident Commander. The Incident Commander has the overall responsibility for managing the incident by establishing the objectives, planning strategies, and implementing tactics. The Command Staff may assist with various duties, the Planning Officer may help in preparing the incident action plan, and the Operations Section Chief is in charge of executing that plan, but it's the Incident Commander that sets the main strategic objectives.