Final answer:
Teaching adolescent girls the importance of monthly breast self-examinations represents secondary preventive care, focusing on early detection of breast cancer for a better outcome.
Step-by-step explanation:
Teaching adolescent girls about the importance of monthly breast self-examination is a form of secondary preventive care. This level of preventive care involves the early detection and treatment of diseases or conditions. Monthly self-exams for breast cancer can help identify lumps or other changes, which may indicate the presence of breast cancer. As a result, early detection through self-examination can lead to earlier treatment and a better prognosis. Although breast cancer is rare in teens, learning and performing breast self-examinations monthly is a useful habit to establish early on.