What is the requirement for child passengers in terms of seat restraints?

The requirement for child passengers in terms of seat restraints is that they must use only a lap belt. In many jurisdictions, there are specific regulations regarding the type of restraints required for child passengers depending on their age, size, and weight. A lap belt alone may be considered acceptable in some cases for older children who have outgrown car seats or booster seats but are not yet large enough to safely use a regular seat belt.

It's essential to understand that while lap belts might be permitted under certain circumstances, they are generally not recommended for younger and smaller children who should be secured in appropriate car seats or booster seats. These specialized restraints are designed to provide better protection in the event of a collision. Always refer to local laws and safety guidelines, as they can vary by region and evolve to reflect new safety standards.

In summary, the correct choice highlights that specific situations may allow for the use of a lap belt, but this is context-dependent and must comply with safety guidelines for children's safety while traveling in a vehicle.