Final answer:
The true statement about safety belts is that they reduce injury to passengers by increasing the time of impact.
Step-by-step explanation:
The statement that is true when it comes to safety belts is a. It reduces injury to the passengers by increasing the time of impact. Safety belts are designed to restrain passengers during a sudden stop or collision, increasing the time over which the force acts and reducing the force of impact. This helps to prevent injuries to the passengers.