Answer:
D. Turn the client on his side.
Step-by-step explanation:
The first action the client's family should take in the event of a seizure is to turn the client on his side. This will help to prevent aspiration of any secretions or vomit and ensure that the airway is clear. After the seizure has ended, the family should reorient the client, protect the client's head, and loosen constrictive clothing as needed.