What must be demonstrated for Level 4 in the Group Lift difficulty?

For a Group Lift to achieve a Level 4 difficulty rating, it is necessary to demonstrate four features from each of the difficulty groups. This requirement elevates the complexity and execution of the lift, ensuring that the team displays a high level of skill and synchronization. By fulfilling this criterion, the team's performance in the lift showcases not only strength and balance but also the ability to seamlessly integrate multiple elements, which is crucial for high-level competition.

The other choices do not meet the specific standards set for Level 4. Demonstrating features from different groups or only fulfilling basic requirements would not be sufficient to achieve the advanced rating needed in competitive synchro skating.