After a tonic-clonic seizure, what nursing action is the highest priority?

A. Loosening clothing and injury protection are important but typically addressed during the seizure. B. Administering medications is essential but after ensuring the client’s airway and safety. C. Documentation is necessary but is secondary to immediate client safety. D. Maintaining airway patency and continuous monitoring after the seizure are critical to prevent hypoxia and ensure prompt intervention if complications occur.