A nurse in the preoperative area should take which action first:

A. Educating the client about postoperative expectations is a necessary nursing intervention to reduce anxiety and improve recovery outcomes. However, this is not the priority action in the preoperative area when compared to patient safety protocols. Education should occur only after the nurse has ensured that the correct patient is prepared for the correct procedure. B. Verifying the correct client and surgical site is the first and most critical priority according to the World Health Organization and Joint Commission safety standards. This step prevents catastrophic surgical errors such as wrong-site, wrong-procedure, or wrong-person surgery. The nurse must confirm the patient's identity using two identifiers and ensure the surgical site is marked before any other tasks. C. Introducing the client to surgical team members helps build rapport and facilitates communication within the perioperative environment. While this supports a positive patient experience, it does not address the immediate safety requirements of the preoperative phase. Safety verification must always precede social introductions or non-emergent team coordination to ensure the clinical pathway is accurate for the individual. D. Obtaining a full set of vital signs is a vital component of the preoperative assessment to establish a baseline for intraoperative monitoring. Although clinically significant, it is secondary to the primary safety goal of verifying the patient and site. If the nurse collects data on the wrong patient, the subsequent surgical process remains inherently unsafe despite having accurate physiological measurements.