The nurse leading a care team on a medical surgical unit is assigning client care to a practical nurse (PN) and an unlicensed assistive personnel (UAP). Which activity should the nurse assign to the UAP?

A. Determining the diameter and depth of a dermal ulcer requires clinical assessment and should be done by a nurse (RN or PN). B. Evaluating a client's mobility progress requires clinical judgment to assess the effectiveness of interventions, which is the responsibility of a nurse. C. Titrating oxygen involves adjusting the oxygen flow based on clinical criteria, which is a nursing responsibility requiring assessment skills and judgment. D. Procure platelet products from the blood bank is within the scope of practice for UAPs, as it involves logistical tasks that do not require clinical judgment or assessment.