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

Assessment always comes first in the nursing process. Before teaching or demonstrating, the nurse must assess the client's current knowledge base about the diaphragm. This prevents redundant teaching, identifies misconceptions, and tailors education to the client's needs. Teaching (D), return demonstration (A), and documentation (B) all follow the initial assessment.