What conditions allow a dispatcher to remove a track from service in a conductor's name?

The correct choice is that a dispatcher can remove a track from service in a conductor's name when the track is On Hold with no Roadway Worker in Charge. This situation indicates that the track has been set aside for a specific purpose but is not actively being used by any Roadway Worker, allowing for the conductor to take action in terms of service removal.

It's important to note that this condition emphasizes the conductor's authority and readiness to manage the track safely without the presence of additional workers who could complicate the situation. The conductor’s RWP qualification ensures that they are knowledgeable about the safety protocols required for such actions.

In contrast, removing a track for maintenance or because track cars occupy Out of Service (OOS) limits involves different operational protocols that do not pertain specifically to the authority or actions of the conductor. These scenarios usually involve established maintenance schedules or the presence of equipment that must be addressed separately.