Themes in a document are applied to which aspect?

Themes in a document are applied to the entire document, which means that when a theme is selected, it affects all relevant aspects of the document's formatting and style. This includes elements such as colors, fonts, and overall design, creating a cohesive and harmonious look throughout the entire piece. By applying a theme, you ensure that all parts of the document—whether it's the title, headings, body text, or graphical elements—are styled uniformly, enhancing the visual appeal and readability of the document. Other choices, like only applying to a single paragraph or page, do not capture the full scope of what themes do in word processing applications.