Answer:
The Master Slide in PowerPoint is the main slide that defines and sets the layout, colors, fonts, backgrounds, effects, and almost everything else for the slides that follow it. Any changes you do to a font or upload a logo in the master slide they will be applied to all the slides below automatically.
Explanation:
In Microsoft PowerPoint, the Slide Master is the top slide that controls all information about the theme, layout, background, color, fonts, and positioning of all slides. Using the Slide Master is an easy way to adjust the look of an existing theme or make changes to all slides in your presentation.
