Which of the following is NOT considered a convention for text presentation?

Using a decorative serif font is not considered a convention for text presentation because it can negatively impact readability and accessibility. In effective text presentation, clarity and legibility are key priorities. Often, conventions recommend using simple, sans-serif fonts for body text to ensure that the content is easily read, particularly across various devices and for audiences with different visual perceptions. Decorative fonts, while they can add personality or style, may distract readers or make text harder to read, especially in larger bodies of content. Thus, adhering to conventions that prioritize readability often excludes the use of overly decorative fonts.

In contrast, the other options represent standards in text presentations aimed at enhancing clarity. For example, making headings larger than body text helps to establish a clear visual hierarchy, using no more than three fonts keeps the design cohesive, and avoiding light text on a light background enhances contrast, making text easier to read.