Which of the following counts as an error by the Supported Skater?

Touching the ice with any part of the body qualifies as an error by the Supported Skater in synchro skating. This is because the fundamental principle of balance and control is paramount for a supported position. When a skater makes contact with the ice using any body part other than the skates, it indicates a loss of balance or control, which detracts from the skater's ability to perform the routine effectively and safely. Maintaining the integrity of the skating position without any body contact to the ice is critical to uphold the aesthetic value and technical execution required in synchro skating.

While the other options might represent variations in technique or position, they are not directly classified as errors within the context of routine execution. For instance, executing more than one rotation could be a stylistic choice or part of a specific element, maintaining a low body posture may be a desired look for some formations, and not holding the free foot could simply suggest a different way of completing a move rather than being an outright error. Thus, the act of touching the ice is clearly identified as a mistake, emphasizing the importance of maintaining proper form and balance in a synchronized skating performance.