The nurse is preparing to assist the physician with a bone marrow biopsy. Which of the following interventions is most important for the nurse to carry out before the procedure?

A. Draping the biopsy site is important but is done immediately before or during the procedure, not as a priority pre-procedure intervention. B. Explaining the procedure to the family is helpful, but patient preparation and comfort take priority. C. Observing for bleeding is important post-procedure rather than pre-procedure. D. Administering an analgesic before the procedure is most important to reduce pain and anxiety, ensuring the patient’s comfort and cooperation during the biopsy.