Which of the following is considered a key element of Highland Dance technique?

Posture is a foundational element of Highland Dance technique, as it directly influences the dancer's balance, alignment, and overall performance quality. Proper posture allows dancers to execute movements with strength and clarity, showcasing their technical ability and enhancing the visual appeal of their dance. Good posture involves keeping the spine straight, shoulders back, and maintaining an open chest, which helps in executing steps correctly and can prevent injuries during practice.

While costume design, stage presence, and choreography contribute significantly to the performance and enjoyment of Highland Dance, they do not directly pertain to the technical execution of the dance itself. Posture underpins all movements and is essential for achieving the proper form and technique throughout the dance. Therefore, focusing on developing and maintaining proper posture is critical for any Highland dancer aiming to excel in their art.