A nurse enters the room of a school-age child and finds them on the floor experiencing a tonic-clonic seizure. Which of the following actions should the nurse take?

A. Place a pillow under the child's head: Protecting the head prevents injury from impact with the floor during the seizure. Using a pillow or folded blanket cushions the head while allowing the seizure to run its course safely. B. Restrain the child's upper extremities: Restraining movements during a seizure can cause fractures, dislocations, or soft tissue injury. The nurse should allow the seizure to occur naturally while ensuring the environment is safe. C. Place a padded tongue blade in the child's mouth: Inserting any object into the mouth is unsafe and can cause dental injury, aspiration, or airway obstruction. Current guidelines advise against this practice. D. Turn the child onto their back: Placing a child supine during a seizure increases the risk of airway obstruction and aspiration. The recommended position is lateral (side-lying) to maintain airway patency and allow secretions to drain.