Which of the following can be defined as tertiary prevention?

A. None of the above: There is a correct answer among the options. B. Strategies that can be used to prevent illness: This describes primary prevention, which aims to prevent disease before it occurs (e.g., immunization, health education). C. Early detection of the disease or health problem that has already developed: This is secondary prevention, focused on early diagnosis and prompt treatment (e.g., screening). D. Addresses the needs of persons who have their day-to-day wellness challenged, by slowing disease or limiting complications: This is tertiary prevention, which focuses on managing chronic disease, preventing progression, and improving quality of life (e.g., rehabilitation, medication management).