Which report is routinely submitted by non-deployed units?

The regular report is the correct choice because it serves as a fundamental tool for non-deployed units to communicate their operational status and other relevant information routinely. These reports are designed to provide consistent updates on unit readiness, activities, and any issues that may arise in a standardized format. Regular reports ensure all units remain accountable and that their leadership stays informed, making them essential for maintaining oversight and effective management of resources.

In contrast, validation reports are typically used to confirm the accuracy or status of specific data or compliance. Change reports are focused on documenting modifications within a system or process, while deployed reports cater specifically to units actively engaged in operations, thus are not applicable to non-deployed units.