Which feature allows for the quick addition of transitions between slides?

The Transitions tab is specifically designed for managing slide transitions in PowerPoint presentations. This feature allows users to easily select and customize different transition effects that occur when moving from one slide to the next. Using this tab, you can apply a transition to one or multiple slides quickly, adjust the duration of the transition, and even set them to advance automatically after a set time, enhancing the overall flow of the presentation.

The other tabs in PowerPoint serve different purposes: the Animations tab focuses on adding and controlling animations to objects within a slide rather than transitions between slides, the Design tab is used for selecting themes and styles for the overall appearance of the slides, and the Home tab primarily deals with basic slide editing functions such as inserting text and formatting. By focusing on the Transitions tab, users can streamline their presentation design process specifically regarding how slides interconnect visually.