What is an advantage of a digitally displayed altitude indicator?

The choice highlighting the horizon line extending all the way to the edges of the Primary Flight Display (PFD) is significant because it enhances situational awareness for the pilot. A digital display creates a visual representation that can improve depth perception and the overall understanding of the aircraft's orientation in relation to the horizon. This panoramic representation can help pilots maintain better visual referencing, especially in conditions where visibility is reduced.

While other advantages of digital displays include precision in readings, lower error rates, and potentially reduced pilot workload through automation, the specific advantage that a digitally displayed altitude indicator offers by extending the horizon line provides a unique benefit that directly aids in flight management and navigation. This can be particularly important during maneuvering phases or in challenging weather conditions.