A nurse is collecting data from a 3-year-old child who has acute diarrhea and dehydration. Which of the following findings indicates that oral rehydration therapy has been effective?

A. Respiratory rate 24/min: While a normal respiratory rate is positive, it is not a primary marker of hydration status. B. Urine specific gravity 1.015: A normal urine specific gravity indicates adequate hydration. C. Heart rate 130/min: Tachycardia indicates ongoing dehydration or stress. D. Capillary refill greater than 3 seconds: Prolonged capillary refill suggests inadequate perfusion and continued dehydration.