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

The correct choice highlights the role of the nader pin, which is specifically designed to enhance vehicle safety during collisions. This device is typically part of the door latch mechanism and engages when the vehicle experiences a significant impact. The nader pin helps to keep the door secured to the body of the car, preventing it from opening unintentionally during a collision. By doing so, it helps protect the occupants inside by offering an additional layer of stability and security in tumultuous crash situations.

In contrast, terms like safety lock and safety pin may refer to various locking mechanisms but do not specifically address the function of maintaining door integrity under crash conditions. The term nader jam is less commonly used and can lead to confusion regarding its role and functionality. Understanding the specific technical terms related to vehicle safety features allows for better comprehension of how vehicles protect occupants during emergencies.