How many independent anchors should primary life support lines have?

Having at least two independent anchors for primary life support lines is crucial for ensuring safety and reliability in rescue operations. This practice is based on the principle of redundancy, where multiple anchoring points provide additional security. Should one anchor fail due to factors like structural instability or equipment failure, the other anchor would still maintain the integrity of the system, thereby safeguarding individuals involved in a rescue scenario.

In rescue operations, where lives may depend on the reliability of the equipment, having at least two independent anchors helps to significantly reduce the risk of accidents. It also helps distribute the load more evenly, minimizing the risk of anchor failure under stress. This redundancy is particularly important in dynamic environments where conditions can change rapidly, and the anchors must remain secure.

Other options suggest fewer than two anchors, which does not adequately provide the safety margin needed for critical rescue operations. Effective anchoring is foundational to establishing a safe and reliable lifeline.