A Client Has Received a Dose of Ondansetron (Zofran)for Nausea

A client has received a dose of ondansetron (Zofran) for nausea.What action by the nurse is most important?

A) Assess the client for a headache.
B) Assist the client in getting out of bed.
C) Instruct the client to reduce salt intake.
D) Weigh the client daily before the client eats.