Final answer:
For a health maintenance/illness prevention session, stress management techniques for working parents is the most relevant topic, addressing broad health promotion and offering sustainable intervention strategies for long-term benefits.
Step-by-step explanation:
In planning a session on health maintenance and illness prevention at an outpatient clinic, the nurse should select a topic that directly addresses overall health promotion and disease prevention strategies. This might include discussing how to identify and define critical problems related to health, exploring various barriers to achieving optimal health, and offering interventions. Considering these aspects, the most appropriate topic for a health maintenance/illness prevention session would be stress management techniques for working parents. Stress is a significant factor that affects health and can lead to chronic illness, making it essential to provide strategies for managing it. It's not only about immediate relief, but also about designing sustainable health education and disease prevention interventions that result in long-term health benefits for the community.