Final answer:
Children aged ten and under must be properly restrained in a car seat while traveling in a vehicle to ensure their safety and reduce the risk of injuries in case of an accident.
Step-by-step explanation:
In most countries, including the United States, it is required by law that children aged ten and under must be properly restrained in a car seat while traveling in a vehicle. This is to ensure their safety and reduce the risk of injuries in case of an accident.
The use of car seats is especially important for younger children as their bodies are not yet fully developed and the car seat provides the necessary support and protection. As children grow older and taller, they may transition to booster seats and eventually be able to use regular seat belts.
Parents and caregivers should always follow the guidelines provided by the car seat manufacturer and local laws to ensure that children are properly restrained for their age and size.