How is Class C airspace depicted on navigational charts?

Class C airspace is depicted on navigational charts by a solid magenta line. This representation is important for pilots to easily identify the boundaries of Class C airspace, which generally surrounds airports with a significant level of air traffic. The solid magenta line indicates controlled airspace where specific communication and clearance protocols must be followed.

This format facilitates pilots in recognizing airspace restrictions and helps in the planning of their flight routes, ensuring safety and compliance with air traffic control regulations. Beyond the outlines, Class C airspace typically has a tiered structure, extending from the surface to a specified altitude, which adds another layer of importance to the proper identification of this airspace type on charts.

The other options use different line styles and colors which signify other classes or types of airspace, but those are not applicable to Class C airspace.