Children under the age of ___ are required to use a child safety seat, unless they are taller that 57"

• A. 8
• B. 9
• C. 10
• D. 7

Answer: (D)

The main idea here is that child safety seating is determined by both age and height: younger children must ride in an appropriate child seat, but once they reach a certain height, they can use a regular seat belt. The question asks for the age cutoff before the 57-inch height exception applies. In this item, the rule is stated as children under the age of seven must use a child safety seat unless they are taller than 57 inches. The 57-inch height threshold is the point at which the child may transition to a regular seat belt, so this age cutoff pairs with that height exception to determine when the seat is required. Think of it as the age limit that keeps the child in a safety seat until they’re tall enough to fit a seat belt properly. The other ages don’t align with this specific rule as described in the question. To put it in context, 57 inches is about 4 feet 9 inches, which helps illustrate why height, not just age, matters for determining belt fit and restraint type.