Final answer:
The priority nursing intervention for a 6-year-old boy with burns and black sputum is to obtain a brief history, evaluate the child, and provide emergency care.
Step-by-step explanation:
The priority nursing intervention for a 6-year-old boy who has been admitted to the hospital with burns and black sputum is to obtain a brief history, evaluate the child, and provide emergency care (option D). This is crucial because the presence of black sputum suggests inhalation injury, which can be life-threatening and require immediate intervention. Evaluating the child's condition and providing emergency care will help stabilize the child's condition and prevent further complications.