A figure eight on a bight is used to:

The figure eight on a bight is primarily used to create a secure loop at the working end of a rope. This type of knot forms a reliable loop that can be easily clipped into a carabiner or used as a connection point for additional equipment, making it highly versatile in various applications, particularly in rescue scenarios, climbing, or securing loads.

By tying a figure eight on a bight, the knot allows for an easy and effective method to form a loop without needing to create a knot at the end of the rope. This can enhance safety, as the knot is less likely to slip or come undone under load. Its structure also allows the knot to maintain its shape even under tension, which is essential for maintaining a secure connection.

The other options involve different knot types or uses; for instance, wrapping a loop around an object typically refers to a bowline or clove hitch, while attaching a rope to an eye or ring would utilize a different knot altogether, such as a bowline or a figure eight knot. Joining two ropes together would rely on a bend knot, such as a square knot or double fisherman's knot. Each has its own specific applications and advantages, but the figure eight on a bight is distinctly known for creating a