A patient with COPD would be expected to have

The correct answer is A because patients with COPD typically experience a loss of protective respiratory mechanisms due to prolonged irritation or damage, leading to impaired lung function and airflow limitation. This results in symptoms such as difficulty breathing, chronic cough, and increased mucus production. Choices B, C, and D are incorrect as they do not align with the pathophysiology of COPD. Swelling and inflammation in the lungs (B) may occur in conditions like pneumonia, not COPD. An acute viral infection (C) is a temporary condition and not characteristic of the chronic nature of COPD. Inflammation and swelling of sinus membranes (D) are more indicative of sinusitis, not COPD.