How must AC skaters perform the interlocking feature?

The interlocking feature in synchro skating requires skaters to perform their movements in a continuous and individual manner. This means that while the skaters are part of a larger team formation, each skater must execute their movements independently to create a visually appealing pattern that highlights both the individual skills of the skaters and the overall cohesion of the team.

The emphasis on continuous and individual execution is essential because it allows for a dynamic performance where each skater can showcase their personal technique while still contributing to the team's synchronized aesthetic. This approach can lead to a more intricate and engaging routine, making it an effective way to demonstrate both teamwork and skill.

The other options describe approaches that would not fulfill the requirements for the interlocking feature. For instance, performing "all at once" would detract from individual execution and may create a cluttered visual that doesn’t emphasize synchronization. Similarly, "only once" does not align with the idea of continuous movement, and performing "in groups" could disrupt the individual execution that is vital for showcasing each skater's personal abilities in conjunction with the team's performance.