Final answer:
The highest priority nursing action for a teenager admitted with burns is to maintain aseptic technique during procedures to prevent infection and promote healing.
Step-by-step explanation:
The nursing action with the highest priority for a teenager admitted with burns is to maintain aseptic technique during procedures. This is because burn patients are extremely susceptible to infection, and maintaining aseptic technique helps prevent the introduction of bacteria and other pathogens into the burn wounds, reducing the risk of complications and promoting healing.
While counseling regarding problems of body image and encouraging peers to visit are important aspects of holistic care for a burn patient, they are not the highest priority in this case. Maintaining airborne precautions may be necessary for patients with respiratory infections or contagious illnesses, but it is not directly related to burns.