Final answer:
Wearing a seat belt with a shoulder strap greatly reduces the risk of injury in a crash by preventing occupants from being thrown forward and distributing the force of impact.
Step-by-step explanation:
Wearing a seat belt with a shoulder strap greatly reduces the risk of injury in the event of a crash. The seat belt helps to prevent the occupants from being thrown forward and hitting the dashboard or windshield. It also helps to distribute the force of impact across the strongest parts of the body, reducing the risk of injury to vital organs.