A client with chronic obstructive lung disease who is receiving oxygen at 1.5 L/minute by nasal cannula, is currently short of breath. Which action should the nurse take?

A. Ask the client to take short, rapid breaths: This can increase respiratory rate and may exacerbate the client's shortness of breath. B. Instruct the client in pursed lip breathing: Pursed lip breathing can help improve gas exchange and reduce dyspnea by slowing down the client's respiratory rate and increasing oxygenation. C. Increase oxygen to three L/minute: Increasing oxygen without assessing the client's oxygen saturation may lead to oxygen toxicity and is not indicated without further assessment. D. Have the client breathe into a paper bag: This intervention is not appropriate for a client with chronic obstructive lung disease experiencing shortness of breath. It is typically used for clients experiencing hyperventilation.