What must drivers do to comply with Idaho law concerning child passengers?

Answer: B — Use approved child safety seats for young children

In Idaho, it is a legal requirement for drivers to use approved child safety seats for young children. This regulation is in place to enhance the safety of young passengers who are more vulnerable to injury in the event of a vehicle crash. Child safety seats are designed to protect children based on their age, weight, and height, and they significantly reduce the risk of serious injury or fatality during a collision. Using approved child safety seats ensures that the seats meet safety standards set by the National Highway Traffic Safety Administration (NHTSA) and are suitable for the child's specific needs. It is essential for parents and guardians to be aware of these laws to properly secure their children and follow best practices for their safe transport in vehicles. Thus, compliance with this regulation is crucial for ensuring the safety of child passengers on Idaho roads.