Which of the following tools can be used to help unlock a vehicle door?

The K Tool is an effective device specifically designed for unlocking car doors, particularly when the door is locked and the window has been rolled up. It works by allowing the user to reach inside the vehicle after creating a small gap in the weather stripping, enabling the unlocking of the door without damaging the vehicle.

A Slim-jim, although often mentioned in discussions about vehicle unlocking tools, may not be suitable for all modern vehicles due to their complex locking mechanisms, and using it improperly can cause damage to the vehicle. Screwdrivers can potentially be used to pry open doors, but this method poses a significant risk of damaging the vehicle and may not be effective with certain locks. A wire hook can sometimes be used in a similar way to a Slim-jim but lacks the specific design features that make the K Tool effective and less likely to cause damage.

Overall, the K Tool stands out as the most appropriate and specialized tool for the task of unlocking vehicle doors safely and effectively.