What does a "Transition" do between slides?

A transition in a PowerPoint presentation refers to the visual effects that occur when moving from one slide to another. Specifically, it controls how one slide exits and the subsequent slide appears. This functionality allows for a smoother flow between slides and enhances the overall presentation experience by adding visual interest and emphasis. Different transition effects can be applied, such as fades, wipes, or slides, which can help convey the mood or theme of the presentation.

The other answers do not accurately describe the purpose of transitions. Adjusting font styles pertains to text formatting rather than slide movement. Limiting the number of slides refers to the presentation's structure but has no connection to transitions. Locking slides during editing is unrelated to the animation or transition effects that occur between slides. Thus, understanding the role of transitions is essential for creating engaging and effective presentations.