Which of the following is NOT a gait demonstrated in western pleasure?

In western pleasure classes, the primary gaits demonstrated are the walk, jog, and lope. The walk is a naturally smooth and four-beat gait, while the jog, which is a slower version of the trot, is characterized by a two-beat diagonal gait that is relaxed and comfortable. The lope is a smooth, three-beat gait that is often preferred for its ease of movement and style in western riding.

The trot, although commonly seen in various equestrian disciplines, particularly in English riding, is not a gait that is specifically emphasized in western pleasure events. In fact, the trot is viewed as too fast and energetic for the relaxed nature that western pleasure aims to showcase. Competitions focus on the horse's ability to move smoothly and with a calm demeanor, characteristics that do not align with the trot’s more brisk pace. Therefore, recognizing that the trot is not part of the expected gaits in western pleasure makes it the correct choice for this question.