Final answer:
The nurse manager should provide additional training and resources to assist the staff nurse.
Step-by-step explanation:
The best strategy for the nurse manager to assist the staff nurse who isn't working to their full potential would be to provide additional training and resources. This approach would help address any skills or knowledge gaps that the staff nurse may have, and provide them with the necessary tools and support to perform their duties effectively. By offering additional training and resources, the nurse manager can empower the staff nurse to reach their full potential.