Which control displays airfields on the ND MAP or CHART?

The correct choice indicates that option B is associated with the control responsible for displaying airfields on the Navigation Display (ND) in either MAP or CHART formats. This control is critical for pilots as it allows them to visualize and identify airfields in relation to their current flight path or navigation plan.

When the relevant control is engaged, it overlays airfield information on the map, which enhances situational awareness. This capability ensures that pilots can easily locate airports, assess them for potential landing or diversion options, and make informed decisions during flight operations.

The ND serves as a primary navigational tool, providing essential information for both navigation and safety, making the ability to display airfields a vital function. The other choices represent controls that do not have this specific function, highlighting the importance of correctly using the controls available within the ND system.