What is the benefit of locked doors during a crash?

Locked doors during a crash significantly decrease the chance of passengers being ejected from the vehicle. When doors are locked, they are less likely to open upon impact, which creates a barrier that holds passengers securely inside the vehicle. This is particularly important during a collision, as the force from the crash can potentially cause passengers to be thrown from the vehicle if the doors were to fly open. Keeping the doors locked enhances the overall safety of the vehicle occupants by helping to ensure that they remain within the protective structure of the car, reducing the likelihood of serious injury or fatality caused by ejection.

The other options highlight scenarios that would not provide safety benefits. For instance, if doors are unlocked, they can open easily during a crash, which would heighten the risk of ejection. Ultimately, the primary benefit of locked doors is their role in maintaining the integrity of the passenger compartment during a collision.