What describes the DIVERGING APPROACH aspect?

The correct description of the DIVERGING APPROACH aspect is indeed represented by the combination of solid red over solid yellow or solid red over solid yellow over solid red. This aspect indicates that a train must prepare to diverge at the next signal, with the solid red light indicating the signal's stop aspect, while the solid yellow indicates that the next signal is a caution or approach indication.

The presence of these signals signifies to the engineer that they should reduce speed and be prepared to take a diverging route, which generally involves a lower speed compared to straight track routes. This indication is essential for safety because it ensures that the operator is aware that a change in track alignment is imminent.

In contrast, other signals in the choices provided do not accurately reflect a DIVERGING APPROACH. The understanding of these aspects is critical for railroad operations, as they guide train movement and ensure that operators can navigate safely through complex track layouts.