What technique involves systematically circling the subject's last known point to find clues?

Sign cutting is the correct technique that involves systematically circling the subject's last known point to find clues. This method focuses on observing the environment for any signs of the subject’s presence, such as footprints, disturbed vegetation, or other indicators that may signal their direction or location. By circling outwards, rescuers can maximize their chances of discovering vital evidence that could lead them to the individual they are trying to locate.

While other techniques like search outlining or clue tracking have their applications in search and rescue scenarios, they do not specifically describe the action of systematically circling around a known point to follow up on physical evidence in the immediate area. Track monitoring may refer to observing tracks left behind, but it doesn’t emphasize the importance of expanding the search area in a circular pattern from a fixed point.