While making rounds, the charge nurse notices that a young adult client with asthma who was admitted yesterday is sitting on the side of the bed and leaning over the bedside table. The client is currently receiving oxygen at 2 liters/minute via nasal cannula. The client is wheezing and is using pursed-lip breathing. Which intervention should the nurse implement?

A. Increasing oxygen to 6 liters/minute may not address the underlying cause of the client's wheezing and may not be the most appropriate intervention at this time. B. Calling for an Ambu resuscitation bag may be necessary if the client's condition deteriorates further, but it is not the initial intervention for a client with asthma exacerbation. C. Instructing the client to lie back in bed may not be effective and may exacerbate respiratory distress. D. Administering a nebulizer treatment with a bronchodilator (e.g., albuterol) is the most appropriate intervention for a client with asthma exacerbation experiencing wheezing and respiratory distress. Nebulizer treatments deliver medication directly to the airways, helping to relieve bronchospasm and improve breathing.