A nurse is caring for a child who has Addison's disease. Which of the following actions should the nurse take?

A. Addison’s disease is characterized by adrenal insufficiency, not fluid volume excess. Monitoring for fluid volume deficit is more appropriate. B. Hyperglycemia is not a typical manifestation of Addison's disease, as the condition is associated with a deficiency of cortisol, which can result in low blood glucose levels. C. A low-sodium diet is not indicated for Addison's disease; in fact, the child may require increased sodium intake due to adrenal insufficiency. D. Cortisol replacement therapy is a cornerstone of managing Addison’s disease. It helps to compensate for the deficient cortisol, which is necessary for normal metabolism and stress response.