A nurse is caring for a child who is having a tonic-clonic seizure and vomiting. Which of the following actions is the nurse's priority?

A. Loosening restrictive clothing is important for ensuring the child’s comfort and preventing injury, but it is not the immediate priority. B. Placing a pillow under the child’s head can help prevent head injury during a seizure, but positioning the child is more urgent to prevent aspiration. C. Positioning the child side-lying is the priority because it helps maintain an open airway and reduces the risk of aspiration of vomit during the seizure. Protecting the airway is the most critical intervention in this scenario. D. Clearing the area of hazards is important to prevent injury during the seizure, but it is secondary to ensuring the child's airway is protected.