What indicates a guardian's understanding of car seat safety for a newborn?

The correct answer is based on current safety guidelines that emphasize the importance of keeping infants in a rear-facing car seat for as long as possible, ideally until they are at least 2 years old. This position is considered the safest for newborns and young children, as it significantly reduces the risk of injury in the event of a crash. Rear-facing car seats support the head, neck, and spine of an infant, providing crucial protection as they are particularly vulnerable due to their developmental stage.

The recommendation to keep a baby rear-facing until at least 2 years old aligns with the latest guidelines from organizations such as the American Academy of Pediatrics. This information demonstrates the guardian's understanding of car seat safety by recognizing the importance of age-appropriate seating arrangements for optimal protection during travel.