Which feature allows users to change Size, Theme, Font, and Style in a presentation?

The feature that allows users to change Size, Theme, Font, and Style in a presentation is the Basic Slide Master Options. The Slide Master serves as a blueprint for the entire presentation, where users can modify elements that affect all slides uniformly. This includes adjusting the overall theme, font selections, and styles for headers and footers, ensuring a coherent design throughout the presentation.

By utilizing the Slide Master, users can set a consistent appearance for all slides, saving time and ensuring visual consistency. Adjustments made in the Slide Master are automatically applied to every corresponding slide, which enhances the efficiency of formatting and allows for a polished final product. This functionality is particularly beneficial when striving for a professional presentation that maintains uniformity in design elements.

The other options, while useful in different contexts, do not specifically offer the comprehensive changes to Size, Theme, Font, and Style that the Slide Master provides.