The correct answer is c- Thoracocentesis.

Thoracocentesis is the medical procedure used for aspiration of pleural fluid. It involves the insertion of a needle through the chest wall into the pleural space to remove excess fluid that has accumulated between the lungs and the chest wall. The procedure is performed under local anesthesia and can be done at the bedside or in the radiology department.

Conditions that may require thoracocentesis include pleural effusion, pneumothorax, hemothorax, and empyema. Pleural effusion is the most common reason for thoracocentesis and occurs when excess fluid accumulates in the pleural space due to various causes such as infections, heart failure, cancer, and liver disease.

The procedure is generally safe and well-tolerated, but there are some risks associated with it. These include bleeding, infection, and damage to the lung or other organs. Therefore, it should be performed by a trained healthcare professional with proper equipment and monitoring.

In summary, thoracocentesis is a medical procedure used for the aspiration of pleural fluid. It is a safe and effective method for the diagnosis and treatment of various conditions affecting the pleural space.