What should be done to ensure safety in hallways and common areas?

To ensure safety in hallways and common areas, it is vital to lock away firearms. This action significantly reduces the risk of accidental access and potential harm to individuals, particularly children, who may be present in those areas. Securing firearms helps create a safer environment where the risk of misuse or accidental injury is minimized.

The other choices do not contribute to enhancing safety. For instance, keeping toys scattered on the floor can lead to tripping hazards, whereas using loose carpets on stairs can also increase the likelihood of slips and falls. Although painting walls in bright colors may improve visibility and aesthetic appeal, it does not directly address safety concerns, especially regarding the management of dangerous items like firearms. Thus, locking away firearms is the most effective measure for ensuring safety in shared spaces.