A nurse is providing teaching to a patient scheduled for abdominal surgery. After discussing the use of the incentive spirometer with the patient, they ask the patient to demonstrate how to use the device. Which action by the patient demonstrates that the patient understood the teaching?

The patient inhales and then places the mouthpiece into their mouth and exhales into the mouthpiece.

The patient inhales into the mouthpiece quickly and shallowly.

The patient places the mouthpiece into their mouth and inhales slowly until they can no longer inhale, holds breath for 6 seconds and then exhales.

The patient slowly inhales and exhales into the mouthpiece multiple times and then holds their breath for 2 seconds.