Final answer:
While the question does not provide a specific number, seatbelts significantly increase the likelihood of surviving a car crash, and proper use can greatly reduce the risk of death or serious injury for children. Safety agencies and statistical reports consistently support the effectiveness of seatbelts, which are essential safety features in vehicles.
Step-by-step explanation:
A seatbelt can save many lives, including that of children. When it comes to the specifics, while it's not quantified in the question, numerous studies and statistical reports suggest that using seatbelts greatly increases the chances of surviving a car crash. It is crucial to keep in mind that seatbelts are one of the most effective safety devices in vehicles, designed to secure occupants against harmful movement that may result during a collision or a sudden stop. A seatbelt's ability to save lives is well-documented through various safety and accident reports.
For instance, in the matter of children, using the proper restraints, such as seat belts and child safety seats, can greatly reduce the risk of injury or death. In the United States, the Centers for Disease Control and Prevention (CDC) emphasizes the importance of using seat belts, indicating that proper seat belt use can reduce the risk of death for front-seat passengers by about 50% and the risk of moderate to critical injury by about 45%. For children, this is particularly significant as their bodies are more vulnerable to injury during vehicle crashes.