A nurse is caring for an adolescent client who has a newly applied fiberglass cast for a fractured tibia. What is the priority action for the nurse to take following this treatment?

A. While explaining discharge instructions is important, it is not the immediate priority following cast application. B. Educating the client to elevate the leg is important to reduce swelling, but it is not the first priority. C. Administering pain relief is necessary, but assessing circulation, sensation, and movement is more critical to identify any early signs of complications. D. Performing a neurovascular assessment is the priority action because it ensures that there is no compromise to blood flow, sensation, or movement in the affected limb, which could indicate complications such as compartment syndrome.