A nurse is collecting data from a client who has acute gastroenteritis. Which of the following data collection findings should the nurse identify as the priority?

A. Elevated urine specific gravity indicates concentrated urine and some degree of dehydration, but it is not immediately life-threatening. B. Hypokalemia (potassium 2.5 mEq/L) is the priority finding. Potassium is critical for cardiac and neuromuscular function, and severe hypokalemia can lead to life-threatening arrhythmias, muscle weakness, or paralysis. Prompt recognition and intervention are essential. C. Blood glucose of 150 mg/dL is mildly elevated and not immediately dangerous in this context. D. A 3% weight loss indicates fluid loss and dehydration, but the immediate risk of hypokalemia outweighs the significance of gradual weight loss.