A nurse is caring for a client who is at 34 weeks of gestation and is preparing to undergo a nonstress test. Which of the following actions should the nurse take?

Assist the client to a lateral tilt position prior to the procedure.

Inform the client that this procedure assists in indicating Down syndrome.

Instruct the client that oxytocin is administered during the procedure.

Ensure the client has been NPO for 6 hr prior to the procedure.