Which of the following is a necessary action before extrication begins?

Stabilizing the vehicle to prevent movement is a critical first step before any extrication work begins. When a vehicle is involved in a crash, it can be in an unstable position, whether it is on its side, upside down, or precariously perched on an obstacle. If the vehicle is not properly stabilized, it may shift unexpectedly during the rescue process, putting both the victim and rescuers at significant risk of injury.

By stabilizing the vehicle, rescuers ensure that it remains secure and does not move during the extrication, which allows them to work safely and efficiently. This could involve using stabilizing equipment such as cribbing, wedges, or hydraulic struts to immobilize the vehicle.

Other actions, such as removing windows, inspecting the interior, or documenting the scene, may be important parts of the overall rescue plan but should not be the first priorities. These can follow once the vehicle's stability is assured, allowing for a safer and more organized extrication process.