Final answer:
Tertiary prevention in hypertension involves managing the established disease to prevent further complications. The appropriate tertiary intervention from the given options is Providing medication adherence education which focuses on patients already diagnosed with hypertension.
Step-by-step explanation:
The question asks which intervention a public health nurse should include as a tertiary prevention strategy for hypertension prevention. Tertiary prevention refers to actions taken to manage and mitigate the impact of an established disease with the aim of restoring function and reducing disease-related complications. Given the options, the correct answer is C) Providing medication adherence education. This is because tertiary prevention targets those who are already affected by hypertension and aims to prevent further health deterioration. On the other hand, interventions such as implementing community-wide blood pressure screenings, encouraging regular exercise and balanced diet, and offering stress management workshops are considered primary or secondary prevention measures as they aim to prevent the onset of hypertension or detect and control the condition before it leads to more serious problems.