What should an architect do to ensure changes made in a blueprint are reflected in live copies?

To ensure that changes made in a blueprint are reflected in live copies, the correct approach is to create a LiveSyncAction. This action is specifically designed to maintain synchronization between the blueprint and its live copies. When a LiveSyncAction is implemented, it ensures that any alterations in the blueprint are automatically propagated to the live copies, thus maintaining consistency across all instances.

Using a LiveSyncAction is crucial in scenarios where frequent updates and changes to the blueprint are expected, as it minimizes the need for manual interventions. This efficiency is particularly important for managing content updates in large-scale projects or when dealing with a significant number of live copies.

The other options involve more manual or less effective methods of maintaining synchronization. Scheduling regular updates may not provide immediate reflection of changes since there could be a delay before the next scheduled update occurs. Manually updating live copies is not only time-consuming but also error-prone, potentially leading to inconsistencies. Utilizing a PageMoveAction does not pertain to updating content within a blueprint or live copies; it is focused on the movement of pages within the AEM structure rather than synchronizing changes.