FFIR provides information that the commander considers most important regarding what?

The correct answer is based on the fact that FFIR, or Fragmentary Fire Incident Report, encapsulates a comprehensive overview that includes critical information needed for effective decision-making in a military context. Specifically, the FFIR covers the mission itself, the troops and support forces that are available to execute that mission, and any constraints in terms of time.

This holistic approach ensures that commanders have a clear understanding of all the essential elements that influence operational effectiveness. Understanding the mission sets the objective, knowing the available troops and support helps in assessing capability, and being aware of the time constraints allows for planning and execution to align with operational goals.

In contrast, focusing solely on mission objectives, enemy force strengths, or weather conditions limits the information scope. Each of these elements is important but does not provide the complete picture that C offers. Therefore, the selection of the comprehensive view provided in C is essential for effective command and operational planning.