Final answer:
If it is necessary to move an unresponsive adult victim quickly away from a scene unassisted, it is best to seek help from others nearby or call emergency services.
Step-by-step explanation:
If it is necessary to move an unresponsive adult victim quickly away from a scene unassisted, the best approach would be to first ensure your own safety and then seek help from others nearby. Moving an unresponsive adult on your own can be dangerous and should be avoided if possible. If there are no other options available, you could try to drag the victim to a safe location, being careful not to cause further harm. However, it is highly recommended to call emergency services or find someone who can assist you in moving the victim safely.