Final answer:
A licensed practical nurse (PN) is appropriate to be assigned to clients B, C, and D. These clients require specialized medication administration, pain management, and wound care.
Step-by-step explanation:
Based on the scope of practice, a licensed practical nurse (PN) is appropriate to be assigned to clients B, C, and D. Client B, who is receiving IV vancomycin through a peripherally inserted catheter (PICC) line, requires specialized medication administration skills that a PN is trained to perform under the supervision of an RN. Client C, a sickle cell crisis patient receiving hydromorphone via a patient-controlled analgesia (PCA) pump, would benefit from the PN's ability to monitor the PCA pump and provide appropriate pain management. Client D, who requires negative pressure (wound VAC) care for a pressure ulcer, can have their wound dressings monitored and changed by a PN.