A newly licensed nurse working at an HIV clinic is reviewing the responsibilities of her position at the clinic. Which of the following tasks should the nurse identify as tertiary prevention?

A. Helping clients understand health screenings is an example of secondary prevention, as it focuses on early detection and intervention. B. Educating clients about immunizations is a primary prevention activity, as it focuses on preventing the onset of disease. C. Reminding clients to take their medications is tertiary prevention, as it helps manage an existing condition and prevent complications. D. Exercise education promotes overall health but is not specifically related to tertiary prevention for HIV.