In Group C's change of side feature requirements, what is crucial regarding the positioning of the skaters?

Establishing one's own track before crossing another's track is central to the requirements for Group C's change of side feature. This aspect ensures that skaters maintain safety and spatial awareness during the maneuver. Proper track establishment allows skaters to navigate the changing dynamics of the formation without interfering with each other's paths, thus minimizing the risk of collisions or disorganization within the team. This requirement emphasizes the importance of individual accountability within the collective movement, reinforcing the foundational principle of synchro skating that each skater's actions must contribute to the overall harmony of the group. The other options introduce elements that do not align with the essential criteria for this specific feature in Group C, making the focus on track establishment the key requirement.