Which statement about booster seat requirements is true?

• A. Most booster seats require children to be at least 5 years old and 40 pounds
• B. Booster seats are required for all children regardless of age or weight
• C. Booster seats are never required
• D. Booster seats are optional above 8 years old

Answer: (A)

Booster seats are used so the vehicle’s seat belt fits a child properly. They position the belt so the lap sits low on the hips and the shoulder belt crosses the chest, not the neck or face. The statement that most booster seats require a child to be at least five years old and 40 pounds reflects the common size threshold for moving from a harnessed seat to a belt-positioning booster. At roughly this size, many children are big enough for the belt to fit correctly with a booster, which is why this option is considered the best match to typical practice.

The other ideas don’t fit because booster use isn’t about age alone, nor is it something you apply to every child or never required. Some children taller or heavier than this threshold may still fit the seat belt appropriately without a booster, while others may need a booster longer if the belt would otherwise fit poorly. In short, booster seats are chosen based on the child’s size and how the belt fits, not simply on age, which is why the statement about 5 years and 40 pounds best captures the common guideline.