Pneumothorax could be a complication of -

Ans. is 'a' i.e., Staphylococcal pneumonia Staphylococcal pneumonia is the most common cause of (amongst all pneumonia) Pneumatoceles Pneumothorax Lung abscess Purulent pericarditis Empyema Other organisms commonly causing empyma --> Streptococcus pyogenes, Pneumococci