Final answer:
Among the listed options, advocating for increased access to prenatal clinics for adolescents to local politicians is an example of community level practice in community health nursing.
Step-by-step explanation:
The question poses a scenario regarding community health nursing theory, practice, and research, and it asks to identify an example of community level practice from a list of options. The correct answer for a community level of practice is C. Advocating for increased access to prenatal clinics for adolescents to local politicians. This action represents a community level practice because it involves engaging with political structures and advocating for policy change that benefits the broader community, rather than focusing on individual or family-level changes.