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

The correct answer is D: Check the child's daily weight. The priority in acute glomerulonephritis is monitoring fluid status due to the risk of fluid overload and hypertension. Daily weight checks help assess fluid retention and guide treatment adjustments. Maintaining a saline-lock (A) is important but not the priority in this case. Placing the child on a no-salt-added diet (B) may be beneficial, but it is not the priority over monitoring fluid status. Educating the parents about potential complications (C) is essential, but it is not the immediate priority compared to assessing the child's fluid status through daily weight checks.