Which mode must be selected to depart from a station when the Train Hold is engaged?

The correct choice for departing from a station when the Train Hold is engaged is MCS mode (Motion Control System mode). This mode is specifically designed to manage the movement of trains while ensuring safety protocols are followed in various operational scenarios. When Train Hold is engaged, it indicates a situation where the train must remain stationary for safety reasons, such as waiting for signals or other operational directives.

Selecting MCS mode after Train Hold allows the system to take control of the train's motion, ensuring that it can be safely released from the hold state and proceed to its next destination according to the pre-defined operational parameters. This integration between the hold mechanism and MCS mode ensures that the transition from a stationary state to movement is smooth and that all safety checks are adhered to.

The other options represent different operational modes that either do not align with the requirements for resuming operation after a hold or are specifically designated for emergency situations, hence making them unsuitable for a standard departure from a station.