What is attached to the top of the wall to assist in jumping over it in Race 4?

In Race 4, a rope is attached to the top of the wall to assist participants in jumping over it. The utilization of a rope serves multiple purposes. Firstly, it provides a grip and leverage that helps individuals pull themselves up or gain better height when attempting to clear the obstacle. Additionally, it can aid in maintaining balance while navigating the wall, reducing the risk of falling.

While other options like a ladder or a trampoline could also assist with jumping over walls, they do not align with traditional practices found in many training or competitive scenarios where a rope is often used due to its practicality and efficiency. A ladder offers a more structured method for crossing height differences, while a trampoline would require additional coordination and might not be available in all race formats. A harness is primarily used for safety during climbing or high-altitude activities but is not typically utilized in a racing scenario focused on overcoming obstacles in a competitive manner.

Thus, the incorporation of a rope provides a straightforward and effective means for participants to overcome the wall's challenge.