Does vertical deviation and scale display on the lower part of the PFD?

The correct response indicates that vertical deviation and scale display is not shown on the lower part of the Primary Flight Display (PFD). The PFD typically provides crucial flight information to the pilot, such as altitude, airspeed, and heading. Vertical deviation—often related to glide path indicators—is usually presented in a specific area of the PFD, typically in the form of a vertical flight path indicator (VPI) or a similar feature, rather than in the lower section.

The PFD's layout is standardized in many aircraft to ensure pilots can quickly find critical information, and vertical deviation is usually integrated into the overall situational awareness display rather than relegated to the lower display area. This allows for a cleaner and more intuitive visual presentation, helping pilots to maintain focus on the most pertinent information regarding their flight parameters.

The other choices imply that vertical deviation and scale information would be displayed either conditionally or only on certain aircraft, which may not conform to the standard configurations of primary flight displays in aviation.