What is the function of the 'Rehearse Timings' feature?

The 'Rehearse Timings' feature is primarily designed to help presenters practice their presentations while simultaneously setting automatic slide timings. When using this feature, a presenter goes through the slides as they would in an actual presentation, and PowerPoint records the amount of time spent on each slide. This allows for a seamless transition during the actual presentation because the slides can be set to advance automatically based on the timings recorded. This is especially useful for ensuring that the presentation fits within a specified time limit, enhances pacing, and helps build confidence by allowing practice in a realistic setting.

The other options do not reflect the primary function of the 'Rehearse Timings' feature; it is not meant for reviewing content for errors, adjusting music timings, or creating backups of presentations, which are managed through different tools and features within PowerPoint.