Exhibits The nurse is teaching Lily purse-lip breathing. She should instruct her to inhale slowly through her:

A. Nose, then exhale more slowly through pursed lips: Pursed-lip breathing involves inhaling slowly through the nose and exhaling gently and slowly through pursed lips. This technique helps keep the airways open longer, promotes better gas exchange, and reduces shortness of breath. B. Mouth, making her exhalation last three times longer than her inhalation: While prolonging exhalation is a goal of pursed-lip breathing, inhaling through the mouth does not support optimal airway conditioning. C. Mouth, then exhale quickly through pursed lips: Exhaling quickly defeats the purpose of pursed-lip breathing, which is to slow down exhalation and prevent airway collapse. Inhaling through the mouth also bypasses natural airway filtering and warming. D. Nose, making her inhalation last three times longer than her exhalation: The goal is to have a longer exhalation phase, not inhalation. Short inhalation and prolonged exhalation help reduce air trapping and improve oxygenation.