What technique is commonly used for search and rescue in smoke-filled buildings?

The technique referred to as the "left-hand rule" is commonly employed in search and rescue operations within smoke-filled environments. This method involves keeping the left hand in contact with a wall while navigating through a structure. By following this approach, rescuers can systematically explore areas without getting lost, as they are essentially following the perimeter of the space.

This technique is particularly effective in low-visibility situations, like smoke-filled buildings, where a lack of clear sightlines can disorient responders. By maintaining contact with a wall, they can find their way back and ensure that they have searched all areas adjacent to that wall. In scenarios involving smoke, this method helps ensure that rescuer and victim safety is prioritized, as it reduces the chances of becoming disoriented or separated from the exit path.

Other options, while they may have their own applications in firefighting or rescue operations, do not convey the same systematic approach to navigating hazardous areas as the left-hand rule does in ensuring thorough searches in poor visibility conditions.