Which part of a rope is primarily used for knot formation?

The working end of a rope is specifically designated for knot formation, which is integral to various rope rescue operations. This end of the rope is manipulated to create knots that secure the rope to anchors or other equipment. Proper knot tying is essential in rope rescue scenarios to ensure safety and reliability during a rescue situation.

In contrast, the running end usually refers to the part of the rope that is not being used to create a knot and is typically the section that is pulled or manipulated for movement. The safety end, although important in ensuring a secure setup, does not play a role in knot formation; instead, its purpose is to prevent accidental release of the knot. The anchor end, while it may be tied to a fixed point or structure, does not focus on the creation of knots but rather on establishing a secure attachment. Thus, the working end is the correct choice for this question as it directly pertains to the formation of knots used in rescue applications.