Final answer:
A PHN implementing public health interventions at the systems level of practice is most likely engaged in advocating for increased taxes on tobacco products, as this type of advocacy influences legislation and public policy for broad, population-wide health impact.
Step-by-step explanation:
Public Health Intervention at the Systems Level
When a Public Health Nurse (PHN) is implementing public health interventions at the systems level of practice, their focus is on broader activities that can impact public health policies and societal norms. The most likely intervention being implemented by the nurse in accordance with the systems level of practice is advocating for increased taxes on tobacco products. This type of intervention aims to create an environment that encourages healthy behaviors among large populations through policy changes. Advocacy work can lead to increased taxes on tobacco products, which has been shown to be an effective measure in reducing tobacco use, thereby improving public health outcomes.
While providing health education directly to individuals or participating in events like the "Great American Smokeout" are valuable, they do not operate at the systems level but rather at an individual or community level. Working with local employers to provide education could be part of a systems-level approach, but it is often considered a community or organizational level intervention. The act of advocating for increased taxes on tobacco products aims to influence legislation or public policy, which has broad implications and can drive large-scale change in health behaviors.