[Solved] On the Internet,these locations contain sexually explicit photographs in digital form that can be bought and downloaded: A)news groups B)commercial bulletin boards C)nude rooms D)3-D rooms Third Level: In the context of education or structures, refers to the third stage or floor; in education, it sometimes refers to tertiary or higher education. Disease Prevention: Strategies or practices aimed at reducing the risk and incidence of infectious and non-infectious diseases in a population. Pain Management: The medical specialty focused on the evaluation, treatment, and prevention of pain, aiming to improve the quality of life for those suffering from chronic or acute pain. Return Demonstration: Participatory teaching method in which the technique is first described to the patient and then demonstrated to the patient; the patient is then asked to repeat the demonstration.