Which of the following describes Class G airspace?

Class G airspace, also known as uncontrolled airspace, typically extends from the surface up to the base of the overlying controlled airspace, which is often at 1200 feet above ground level or less. This classification is crucial for pilots operating in visual flight rules (VFR) to understand where they can fly without air traffic control services. Class G allows for more flexibility in flight operations, especially in rural areas where air traffic is minimal.

While the other options mention various altitudes, they do not accurately define Class G airspace. Class G does not specifically refer to airspace at higher altitudes, such as above 1200 feet, below 500 feet, or within a limited range like between 3000 feet to 5000 feet. Understanding this classification helps maintain safety and situational awareness for pilots flying in environments where air traffic control is not actively guiding their movements.