What indicates a fault in the horse's movement during a performance?

The indication of a fault in a horse's movement during a performance is characterized by an inconsistent gait rhythm. A consistent rhythm is vital for demonstrating the horse's balance, coordination, and overall training level. Disruptions in the rhythm could be a sign of underlying issues such as discomfort, improper training, or a lack of fitness. This inconsistency ultimately affects the overall quality of the performance and the horse's ability to execute movements fluidly and with precision.

In contrast, achieving straightness in passing, maintaining a correct head position, and exhibiting a calm demeanor are all indicators of a well-trained horse. These qualities contribute positively to the overall performance and do not signify faults. Thus, the focus on consistent gait rhythm highlights the critical nature of movement quality in evaluating a horse's performance.