True or False: A person suspended in a harness and unable to stand should lift their legs into a sitting position and avoid moving.

When a person is suspended in a harness and unable to stand, the recommended action of lifting their legs into a sitting position is crucial for preventing serious physiological effects, such as suspension trauma. In this situation, if they can safely elevate their legs, it allows for improved blood circulation and helps reduce the risk of blood pooling in the lower body, which can occur due to the effects of gravity while hanging. This position also aids in maintaining consciousness and overall stability until help arrives or until they can be safely lowered.

Additionally, avoiding unnecessary movement is vital as it minimizes the risk of exacerbating any possible injuries and preserves energy during the suspension. Thus, the statement that a person should lift their legs into a sitting position and avoid moving is accurate and aligns with best practices in rope rescue operations under suspension conditions.