A client is returning to the medical unit after surgery and has a history of migraines. Which intervention would the nurse prioritize for the overall treatment of this client?

A. Obtain a scheduled order for ondansetron or trimethobenzamide.
B. Elevate the head of the bed 90 degrees and provide task lighting in a quiet enviroment.
C. Maintain a clear liquid diet and administer intravenous fluids for hydration.
D. Administer hydromorphone and/or sumatriptan medications for relief.