What is required when using air bags in vehicles with children under 12?

The correct understanding regarding the use of airbags and children under 12 is that when children are riding in the front seat, it is crucial for their safety that the airbags can indeed be turned off or deactivated if necessary. This is particularly important because airbags are designed to deploy with significant force, which can be harmful to a child sitting in the front seat, especially if they are not of sufficient size or age to safely endure such deployment.

The other choices indicate policies that may not align with safety guidelines. While it is commonly recommended for children to sit in the back seat, especially those under 12, the option that air bags can be off when children are in the front is focused on their immediate protection and reflects best practices in child passenger safety.