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

A. Maintaining a saline-lock is important but not the highest priority in this context. B. Checking the child's daily weight is a priority to monitor for fluid retention and changes in fluid status, which are critical in managing acute glomerulonephritis. C. Educating parents is important but comes after ensuring the child's immediate physical needs are addressed. D. While a no-salt-added diet may be recommended, monitoring fluid status and weight is more urgent for assessing and managing the condition.