What is a major difference between Class E and Class G airspace?

Class E airspace is designated as controlled airspace, which means that specific weather minimums must be met for visual flight rules (VFR) operations. These minimums vary based on altitude and whether you are operating in controlled or uncontrolled environments. The requirement for certain minimums helps ensure that aircraft operate safely within the prescribed distances from clouds and visibility conditions, allowing for effective separation from other air traffic.

In contrast, Class G airspace, being uncontrolled, does not impose these minimum weather requirements, allowing pilots to operate with greater flexibility. This distinction highlights the level of regulation and control exercised in Class E compared to the more lenient nature of Class G.

Option A referencing transponders is misleading since while transponders are often required in Class E, there are circumstances within that airspace where they are not. Option C is inaccurate as Class G is not 'always' open for VFR; there are restrictions based on weather and specific operational hours. Lastly, while Class E can indeed be found above 14,000 feet, this is not a defining feature exclusive to that airspace, as Class A and other classes may also exist at those altitudes. Thus, the difference in controlled weather minimums in Class E is a key characteristic