What is one operational limitation of a bucket truck?

Answer: B — Must be parked on flat ground

The operational limitation of a bucket truck that is most accurate is that it must be parked on flat ground. This requirement is crucial for ensuring the safety and stability of the bucket truck while it is in use. If the truck is parked on an uneven surface, there is a significant risk that it could tip over, which could lead to accidents and injuries while personnel are working in the elevated bucket. Additionally, while the design of the truck allows it to extend higher than standard vehicles, this does not constitute a limitation but rather a feature. The ability to operate in various types of terrain is also not a limitation, as bucket trucks are often designed with some level of mobility across different surfaces depending on the vehicle model. However, stability on flat ground is a primary necessity that is integral to safe operations.