What method should rescuers use to assess the stability of their anchor?

The correct choice highlights the importance of performing a pull test as a means to assess the stability of an anchor. This method involves applying a load or force to the anchor to monitor its integrity and ensure that it can withstand the forces it may encounter during a rescue operation. By performing a pull test, rescuers can directly observe how the anchor behaves under load, ensuring that it holds securely and does not move or fail. This practical approach minimizes reliance on assumptions and provides real-time feedback about the anchor's stability.

While visual inspection can be useful, it may not reveal hidden issues that could compromise the anchor’s strength. Listening for sounds of strain may indicate potential problems, but it is not a reliable method for assessing stability. Finally, relying solely on previous experience lacks the thoroughness required to confirm an anchor's current condition, making the pull test the most effective and recommended practice for ensuring safety in rope rescue operations.