Final answer:
The correct response is to highlight the importance of using a rear-facing car seat in the back seat as the safest option for a baby during car travel.
Step-by-step explanation:
The best response to parents who see no A rear-facing car sreason to spend money for a car seat because their baby is happier on someone's lap is: "eat placed in the back seat is the safest place for your baby." This statement is correct because car seats are specifically designed to protect infants and young children during vehicle collisions. Any other option is significantly less safe and potentially illegal. Holding a baby in a lap, even securely, does not provide the same level of protection as a car seat and could result in serious injury or death in the event of an accident. Additionally, airbags can be extremely dangerous for infants and young children, as they are designed for adults and can cause severe injuries to children. Babies must always be in an appropriately sized and installed car seat that meets federal safety standards.