What defines a "blight" in terms of rope terminology?

In rope terminology, a "blight" refers to a specific condition wherein a half loop is formed by turning the rope back onto itself. This situation can create a potential hazard, as it may lead to a weakening of the rope or affect its function during use. Understanding the formation of a blight is crucial for proper rope management and safety, as it can impact the overall integrity of the rope during tasks such as lifting or securing loads.

The other options do not accurately define "blight." A break in the rope signifies a complete failure, which is a different issue entirely. An incorrectly tied knot pertains to knot tying principles rather than a specific condition of the rope itself. Wear on the rope represents a gradual degradation but does not describe the specific half loop scenario associated with a blight.