This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
Lung compliance is increased in 
Select and explain. 
A. The presence of intra-alveolar fluid, B. Acute respiratory distress syndrome, C. Idiopathic pulmonary fibrosis, D. Emphysema
D: Emphysema
Answer: D: Emphysema 
Explanation: Compliance is a measure of distensibility 1 static compliance(compliance when lungs at rest) Causes of decreased static compliance : a) interstitial fibrosis b)atelectasis c)pneumonia d) pulmonary edema e) ARDS 2 dynamic compliance:compliance with airway resistance Decreased in Broncho spasm like asthma.