Where does the runway controller typically work?

The runway controller typically works in a control tower overlooking the runway. This location is strategically chosen because it allows the controller to have a clear visual perspective of all runway operations, including takeoffs, landings, and any ground traffic. Being situated in the control tower enables the controller to effectively communicate with pilots and coordinate the safe and efficient use of the runway.

While option B, the caravan painted in red and white squares, might be reminiscent of various ground operations or maintenance areas, it does not represent the primary location where runway control happens. Other options, such as working directly on the runway or in an aircraft, are not practical for conducting the duties of a runway controller, as oversight and communication would be severely limited in those scenarios.