Which of the following may be carried on a school bus?

The option stating that all the items may be carried on a school bus is based on specific legal allowances. Each of these items has particular exemptions under California law regarding what can be carried on a school bus.

Loaded firearms by peace officers are permitted because law enforcement officers, while on duty, have specific privileges that allow them to carry firearms in places where they might otherwise be restricted, including on school property when performing their official duties.

Starter pistols not capable of expelling a projectile can also be transported on school buses. Since these devices are not considered lethal firearms, they fall under exceptions that distinguish non-lethal weapons from those designed to inflict harm.

Oxygen that is medically prescribed is necessary for students or staff who may require it for health reasons. This medical necessity grants it a special exception, allowing individuals to carry it onto a school bus.

Therefore, all of these items, as described, are allowable under specific circumstances, making the assertion that all may be carried on a school bus correct. Understanding these exceptions highlights the balance between safety regulations and the needs of individuals in particular situations.