The nurse is teaching energy conservation techniques to a patient with severe dyspnea and oxygen saturation of 50 mm Hg. Which action of the patient indicates effective learning?
a) Standing up while performing activities
b) Using diaphragm muscles to breathe deeply
c) Inhaling a lot of air while exerting effort and exhaling at rest
d) Using a tripod posture and placing the mirror on the table while using an electric razor
