Explanation:
The mediastinum is located between two pleural sacs and is the central compartment of the thoracic cavity.The thoracic mediastinum is the compartment that runs the length of the thoracic cavity between the pleural sacs of the lungs. This compartment extends longitudinally from the thoracic inlet to the superior surface of the diaphragm. It also functions as a protected pathway for structures traversing from the neck, superiorly, and into the abdomen, inferiorly.Hence, the correct option is (C).