Which intervention would best demonstrate community health nursing's role in primary prevention?

The best demonstration of community health nursing's role in primary prevention is teaching about bicycle safety. Primary prevention focuses on preventing disease and promoting health before any illness occurs. This type of intervention emphasizes health education and behavioral changes to reduce risk factors.

By providing education on bicycle safety, community health nurses empower individuals to make informed decisions that can prevent accidents and injuries. Such efforts can lead to safer practices, ultimately reducing the incidence of head injuries and fatalities related to bicycle accidents. This approach aligns with the principles of primary prevention, as it proactively addresses potential risks within the community rather than responding to health issues after they have arisen.

In contrast, screening for lead exposure and performing vision screenings are considered secondary prevention interventions, as they involve identifying health issues that already exist in the population. Taking measures to control an outbreak is typically classified as tertiary prevention, focusing on managing existing health problems to prevent complications. Thus, teaching about bicycle safety is the most effective representation of primary prevention in community health nursing.