A nurse is teaching a group of clients newly diagnosed with diabetes how to give themselves injections. Which of the following formats would be most appropriate for the nurse to use?

A. Demonstration: Teaching a hands-on skill like insulin injection is best done through demonstration, allowing clients to observe and practice. B. Non-native language session: This may introduce language barriers and impede understanding unless the clients speak the language. C. Lecture: Less interactive and not ideal for psychomotor skills like self-injection. D. Health fair: Useful for general health promotion but not specific, skill-based education.