Which area indicates where content will actually display when a project is exported?

The action safe area is the correct choice as it represents the portion of the video frame where important visual elements will be displayed on various screens during playback. When a project is exported, the action safe area indicates the area where content such as graphics, text, and important visual components should be placed to ensure they are not cut off on different display devices. This is particularly important for broadcast and other formats where the edges of a video may be cropped depending on the viewer's screen.

In contrast, the title safe area specifically refers to the region within the frame where text and titles are guaranteed to be visible and not obscured or cut off, making it important for text placement but not for the entire content display. The safe zone refers more generally to areas within the frame that are considered safe for various layout elements, but the best answer focusing specifically on where content is displayed is the action safe area. The viewing zone is not a standard term used in video production, emphasizing further why the action safe area is the most applicable term for this context.