Which safety device prevents car doors from opening during a collision?

The Nader pin is a safety device specifically designed to prevent car doors from opening during a collision. It is a type of pin that engages when the door is closed and helps secure the door frame tightly against the vehicle's body. This is particularly important in maintaining the integrity of the passenger cabin during a crash, as it helps to shield occupants from ejection and exposure to external hazards.

In contrast, while the airbag system provides essential protection by deploying during a collision to cushion occupants, it does not physically prevent doors from opening. The safety latch performs a function that helps keep the door closed in normal conditions, but it does not have the same impact in severe crash scenarios. The door lock mechanism, while it can secure the door in a locked position, may not always remain effective under extreme force, especially if the locking mechanism fails or is compromised. Therefore, the Nader pin is specifically engineered to enhance safety in the event of a collision by preventing unintended door opening, making it the correct choice in this context.