At what minimum age and height may a child be restrained using an adult safety seat belt?

The minimum age and height for a child to be restrained using an adult safety seat belt is based on safety guidelines intended to ensure proper fit and protection for the child in the event of a vehicle accident. The correct answer specifies that a child must be at least 8 years old and 57 inches tall to safely utilize an adult seat belt.

This guideline is established to ensure that the seat belt will properly restrain the child, providing adequate protection. Seat belts are designed for adults, and children's bodies are often not large enough to safely use them until they reach certain physical maturity. At 8 years old and 57 inches, children are more likely to meet the height requirements for the seat belt to sit correctly across their lap and chest, which decreases the risk of injury during a crash.

Other choices may suggest either a younger age or a shorter height, which may not offer the same level of safety and protection. Using an adult seat belt before a child reaches these thresholds can result in improper seating position, increasing the risk of serious injury in the event of a collision.