In order to create visually attractive documents:

A) use at least four typefaces in a document.
B) maximize the use of words set in all-capitals.
C) use headings and sub-headings to signal readers.
D) use white space to deemphasize points.

Using headings and sub-headings helps to break up the text and make it easier to read and understand. Using too many typefaces or all-capitals can actually make a document less visually appealing and harder to read. While white space can be effective in creating a clean and organized layout, it should be used strategically and not to deemphasize important points.