challenge: What is the primary responsibility of the On-Scene Coordinator (OSC) in directing response actions?
  
  A. To direct responses to discharges of oil that pose a substantial threat to the public health or welfare of the United States
  B. To monitor the actions of the Responsible Party (RP) exclusively
  C. To manage the Incident Command System/Unified Command (ICS/UC) structure
  D. To provide support and advice to local and state governments only
  Answer: 