What should you do with the key of the bus when leaving it unattended?

Taking the key with you when leaving the bus unattended is the correct approach because it ensures the safety and security of the vehicle. Keeping the keys with you prevents unauthorized individuals from accessing the bus, which could lead to theft, vandalism, or accidents. Leaving the key in the ignition or in any part of the bus creates opportunities for someone to drive away or tamper with the vehicle, posing serious risks to both the bus and potential bystanders. Handing the key to a passenger could also result in a non-approved individual having access to the vehicle, which is against safety protocols. Therefore, retaining possession of the key is crucial for maintaining control and ensuring the bus remains secure when not in use.