Which workspace adjustment allows you to return all panels to their original configuration?

Returning all panels to their original configuration is accomplished through resetting to the saved layout. This option specifically allows users to revert the workspace to the last saved setup. It is particularly helpful when a user has made several adjustments to panel positions and needs to restore everything to its default state without starting over from scratch.

In Adobe Premiere Pro, users often tweak their workspace to enhance their editing experience, which can lead to panel misalignment or a setup that feels cluttered. By choosing to reset to the saved layout, they can quickly regain the original arrangement, ensuring efficiency and ease of navigation.

Regarding the other choices, changing the workspace layout may involve altering panel positions or selecting a different workspace preset but doesn't specifically focus on reverting changes to the saved configuration. Opening a new workspace creates a fresh environment devoid of modifications, while customizing the workspace allows for adjustments but does not facilitate resetting previous changes. Thus, the best choice for restoring the original arrangement of panels is indeed resetting to the saved layout.