Final answer:
The nurse-manager should address the nurse's inappropriate comment in private to maintain professionalism and teach proper communication regarding pain management.
Step-by-step explanation:
Regarding the scenario where the nurse-manager overhears a comment from a nurse advising a client to ask for pain medication during labor, the appropriate response would be option 3: Inform the nurse that she'd like to speak with her, then discuss the inappropriateness of her comment in a private location. This approach allows the nurse-manager to address the issue directly with the nurse without causing any embarrassment in front of the client, maintaining a professional environment, and respecting the nurse's dignity. It also provides an opportunity for a teachable moment about how to communicate with clients regarding pain management and properly delegate requests for medical interventions to the attending physician.