A nurse is caring for a female client who requests a contraceptive diaphragm. Which of the following actions should the nurse take first?

A. Document the client's level of understanding about potential adverse effects: Documentation is important but should occur after assessing the client’s knowledge and providing teaching. B. Determine the client's knowledge about diaphragm use: Assessment is the first step in the nursing process. Understanding the client’s baseline knowledge allows the nurse to tailor teaching and identify misconceptions before providing instruction. C. Supervise return demonstration of diaphragm use: Return demonstration evaluates learning but is only appropriate after teaching and assessment have been completed. D. Teach the client how to insert the diaphragm: Teaching is essential but should follow assessment of the client’s current understanding to ensure the instruction is effective and appropriate.