How does a secondary tie-off differ from a standard tie-off?

In cavern diving, a standard tie-off is typically secured with a single wrap around an anchor point, providing adequate security for most situations. This simplicity allows divers to quickly secure themselves in a straightforward manner since the primary focus is on maintaining safety while allowing for efficient movement and navigation within the cavern environment. If additional security is deemed necessary, divers may opt to use multiple wraps, enhancing stability.

In contrast, a secondary tie-off may be implemented in situations where there is a need for extra security, such as in overhead environments or when the conditions call for additional support due to potential movement or disturbances. While the secondary tie-off is essential for layered safety, it is specifically designed to complement the primary tie-off rather than serve as the only means of securing oneself.

This principle clarifies why option C is accurate, highlighting that standard tie-offs normally only require a single wrap unless circumstances dictate otherwise—illustrating the foundational practices that enhance diver safety and operational efficiency.