A nurse is caring for a toddler who has acute laryngotracheobronchitis and has been placed in a cool mist tent. Which of the following findings indicates that the treatment has been effective?

A. While hydration is important in respiratory illnesses, improved hydration is not the primary goal of using a cool mist tent. B. A barking cough is a characteristic symptom of laryngotracheobronchitis (croup) and indicates ongoing airway irritation, not improvement. C.. Stridor is a high-pitched, harsh sound caused by airway narrowing. A decrease in stridor indicates reduced inflammation and improved airway patency, which is the intended effect of the cool mist therapy. D. A decreased temperature may occur with other supportive care or antipyretics, but it is not a direct indicator of improved airway function from mist therapy.