Which statement about airspace classes relevant to VFR flight and typical communications is true?

• A. Controlled airspaces (Class B/C/D/E) require clearance or contact
• B. Two-way radio communications are required where required
• C. Class G is uncontrolled
• D. All of the above

Answer: (D)

Understanding how VFR pilots interact with different airspace helps explain why all of these points fit together. In the busy, controlled airspaces, entry isn’t free for a VFR flight—you either need explicit authorization or you must establish two‑way communication with ATC before you enter.

In the most intense class of controlled airspace, you must have ATC clearance to enter and you’ll be in two‑way contact with ATC to operate there. In the next tier of controlled airspace, you don’t need a formal clearance to enter for a VFR flight, but you must establish two‑way radio communication with ATC before entry and you’ll be given a discrete transponder code. That emphasis on communication applies across the board for controlled airspaces, while Class G remains the one that is not controlled, so no ATC clearance or two‑way communication is required for standard VFR operation there.

Two‑way communications are the mechanism that lets ATC manage traffic in those areas where it’s needed, hence “two‑way radio communications are required where required.” And Class G being uncontrolled is a straightforward contrast to the rest. Put together, these points describe how VFR pilots interact with airspace and ATC, so “all of the above” captures the true, practical picture.