What is the keyboard shortcut to duplicate a slide?

The keyboard shortcut to duplicate a slide in PowerPoint is indeed Ctrl + D. This command is specifically designed for duplicating selected objects or slides, allowing users to quickly create copies without having to navigate through menus.

When you select a slide in the slide sorter or thumbnail view and press Ctrl + D, PowerPoint immediately creates a duplicate of that slide directly below it in the order of the slide list. This is particularly useful for maintaining consistency in presentations, as you can easily replicate slides that share similar layouts or content.

The other choices serve different functions: Ctrl + C is used for copying selected items, Ctrl + A is for selecting all items within the current context, and Ctrl + S is for saving the presentation. While they are all essential shortcuts within PowerPoint, they do not perform the specific action of duplicating a slide. Understanding the distinct purpose of each shortcut can significantly enhance your efficiency while working in PowerPoint.