You forgot to say that this question refers to a situation of terrorism.
Answer:
d. Air Bags
Explanation:
In a situation of terrorism, Air bags will have no use in helping the driver and passengers of a car to protect themselves. This is because the function of the air bag is related to its ability to reduce the impact that the driver and passengers receive if the car hits another object. In this case, the devices that allow the car to leave or the integrity of the people inside it would be more useful.