What is the primary function of child restraints in vehicles?

Answer: B — To protect children in a crash

The primary function of child restraints in vehicles is to protect children in a crash. Child restraints are designed to secure a child safely in a vehicle seat, significantly reducing the risk of injury or fatality during a collision. These restraints are engineered to absorb energy and distribute the forces experienced during a crash across the strongest parts of a child's body. Proper use of child safety seats, booster seats, and harnesses ensures that children are held firmly in place, preventing them from being thrown against the interior of the vehicle or ejected during an accident. While limiting movement, ensuring comfort, or providing entertainment might be secondary considerations for car seats, they do not overshadow the critical function of crash protection that these devices serve. The design and regulations surrounding child restraints focus primarily on safety outcomes, making it essential for caregivers to follow guidelines regarding age, weight, and height limits for the different types of restraints available.