What is the minimum weight and age for a child to transition from a car seat to a booster seat?

The correct answer indicates that a child can transition from a car seat to a booster seat when they weigh a minimum of 40 pounds and are at least 4 years old. This guideline reflects safety standards that have been established to ensure proper seat use for children as they grow.

At around 40 pounds and 4 years, most children will be better suited for a booster seat, which positions the vehicle's seat belt correctly over the child's body. This helps to prevent serious injury in the event of a crash. Car seats are designed for younger, smaller children as they offer more support and have built-in safety features to secure a child properly based on their weight and age.

While the other options present higher weights and ages for transitioning, it’s important to adhere to the established guidelines which focus on readiness based on both physical development (weight) and age milestones. Children who outgrow their car seats based solely on weight may still need the full support of a booster seat to ensure that seat belts fit them correctly as they grow.