What option allows you to hide or show the thumbnail viewer in the Project panel?

The option that allows you to hide or show the thumbnail viewer in the Project panel is located under "View > Preview Area." This setting specifically controls the visibility of the Preview Area within the Project panel, which includes the thumbnail viewer for your clips and assets. By using this option, you can toggle the visible area that displays the thumbnails, enhancing your workspace according to your preferences or project needs.

The other choices focus on different settings and functionalities within Premiere. For instance, "View > Thumbnail Settings" pertains to making adjustments to how thumbnails are displayed, rather than toggling their visibility. "Window > Thumbnail Viewer" would suggest a specific window that displays thumbnails, but does not directly relate to showing or hiding the thumbnails in the Project panel. Lastly, "Project > Show/Hide Thumbnails" is not a recognized command in the interface for managing visibility within the Project panel, which is why it does not represent the correct option.