Which knot is generally used for securing a loop at the end of the rope?

The figure eight knot is particularly effective for securing a loop at the end of the rope due to its structure and reliability. This knot creates a secure and fixed loop which is less likely to slip or come undone under load, making it highly suitable for rescue applications and climbing scenarios.

Additionally, the figure eight knot is easy to tie and untie, even after bearing weight, which is an important feature when working in emergency situations where time and efficiency are critical. It can also be used as the basis for other knots, such as the figure eight on a bight or figure eight follow-through, enhancing its versatility in various rescue techniques.

While other knots mentioned do have their uses, they do not fulfill the specific requirement of creating a secure loop at the end of a rope as effectively as the figure eight knot does.