What is the general altitude range for Class C airspace?

The general altitude range for Class C airspace is defined specifically to provide adequate separation for both visual flight rules (VFR) and instrument flight rules (IFR) traffic in the vicinity of busy airports. Class C airspace typically extends from the surface up to 4,000 feet above ground level (AGL) within a radius of 10 nautical miles from the airport.

This structure is critical as it encompasses areas where significant air traffic is managed, allowing for the safe and efficient movement of aircraft. The vertical limits also indicate that it is within a manageable height for both small unmanned aircraft systems (sUAS) and manned aircraft operating in and around those airports.

The other options do not accurately reflect the established definitions of Class C airspace altitudes, making them unsuitable.