A nurse is caring for a child who has acute glomerulonephritis. Which of the following actions is the nurse's priority?

A. Educate the parents about potential complications: While education is important, it is not the immediate priority. B. Maintain a saline lock: Maintaining IV access is essential but does not directly address fluid balance, the primary concern. C. Place the child on a no-salt-added diet: While reducing salt helps control edema, daily weight monitoring is more immediate for assessing fluid retention. D. Check the child's weight daily: Monitoring weight is the most sensitive indicator of fluid retention and is crucial for evaluating the child's response to treatment.