Which scenario illustrates negligent maintenance?

Negligent maintenance refers to the failure to properly maintain equipment or vehicles, which can lead to unsafe conditions. The scenario that illustrates negligent maintenance is one where a vehicle is rented with a flat tire. This condition indicates that the vehicle has not been adequately serviced and could pose a safety threat to the driver and others on the road. Proper maintenance would involve regularly checking and repairing tires to ensure that the vehicle is safe for operation.

In contrast, the other scenarios involve situations where the vehicle has been properly maintained or is new and covered by warranties, indicating that adequate maintenance practices have been followed. These conditions reflect responsible upkeep, while a vehicle being rented with a flat tire clearly demonstrates a lack of necessary maintenance, making it a prime example of negligence in this context.