At what age is a child required to be in an approved safety seat or booster seat?

The correct choice indicates that a child is required to be in an approved safety seat or booster seat until they reach the age of 8 and a height of 4 feet 9 inches. This regulation emphasizes the importance of using appropriate safety restraints to reduce the risk of injury in the event of a collision. Children are particularly vulnerable due to their smaller size and developing bodies, which means they may not be properly protected by standard seat belts until they reach a certain height and age.

Research has demonstrated that booster seats are crucial for enhancing the effectiveness of seat belts, providing proper seating position, and preventing injuries in children. Therefore, the guidelines reflect a commitment to child passenger safety, ensuring that children are adequately protected based on both their age and physical development.

Other options suggest different combinations of age and height, which may not align with updated safety regulations and best practices currently in place for child passenger safety.