What does the "Insert" tab in PowerPoint primarily allow you to do?

The "Insert" tab in PowerPoint primarily allows you to add various types of content to slides. This tab is essential for enriching a presentation by enabling users to include images, shapes, charts, tables, SmartArt, videos, audio, and text boxes, thereby enhancing the visual appeal and informational value of the slides. By inserting different elements, users can customize their presentations to convey their messages more effectively and engage their audience.

The other options relate to different functionalities within PowerPoint. Changing presentation themes is done through the "Design" tab, which is focused specifically on the overall aesthetics of the slides. Adjusting slide transitions falls under the "Transitions" tab, where users can apply effects that dictate how one slide moves to the next. Collaborating with other users is facilitated using the "Review" tab and features such as comments and track changes, rather than the "Insert" tab. Therefore, the primary function of the "Insert" tab is indeed to add diverse content to enhance presentations.