A nurse is caring for a client who has pneumonia and a prescription for oxygen therapy at 5 L/min via nasal cannula. Which of the following actions should the nurse take?

Apply petroleum jelly to the nares as needed to soothe mucous membranes.

Secure the oxygen tubing to the bed sheet near the client's head.

Remove the nasal cannula while the client eats.

Attach a humidifier bottle to the base of the flow meter.