What does the visibility design principle state about displaying text?

• A. Make text legible and easy on the eyes
• B. Use decorative fonts extensively
• C. Rotate text for headings
• D. Increase font size without regard to legibility

Answer: (A)

The visibility principle for text focuses on making it legible and easy on the eyes so users can read content quickly and without strain. This means choosing readability-friendly typography, appropriate contrast between text and background, and careful decisions about size, line height, and spacing so that body text and headings are easy to scan. When text is legible, users don’t have to strain or zoom in to decipher words, which improves overall usability and accessibility across devices and environments.

Decorative fonts for body text tend to hurt legibility, so using them extensively makes reading harder rather than easier. Rotating text for headings can also disrupt quick recognition and flow, increasing cognitive load rather than supporting visibility. Simply increasing font size without considering other factors like line length, line height, and contrast can improve one aspect (size) but may create layout or readability issues that reduce overall legibility.