Final answer:
The best course of action is to wait for additional rescuers to arrive before trying to move the patient.
Step-by-step explanation:
In this scenario, the best course of action is to wait for additional rescuers to arrive before trying to move him (option A). Based on the information provided, the patient is weak and unable to walk. Moving the patient without proper assistance and equipment can potentially worsen any injuries or medical conditions they may have. It's important to prioritize the safety and well-being of the patient and wait for additional rescuers to arrive who can provide the necessary help to move the patient safely.