Readability of patient education materials is affected by several factors. Which is correct, and how can readability be improved?

• A. Color of ink only.
• B. Only images determine readability.
• C. None of the above.
• D. Sentence length, jargon, font size, and structure; improve by using plain language, active voice, short sentences, bullet points, and large fonts.

Answer: (D)

Readability hinges on how easy text is to understand, which depends on multiple design and language factors. The best choice highlights that sentence length, use of jargon, font size, and how the material is structured all influence comprehension. When you use plain language, you remove unnecessary complexity; active voice keeps statements direct and clear; short sentences help readers process one idea at a time; bullet points break information into manageable chunks; and larger fonts improve legibility for many patients. Together, these elements reduce cognitive load and make instructions, risks, and steps easier to follow.

Color of ink by itself doesn’t determine understanding, and relying on images alone won’t guarantee readability since text often conveys critical details that images can’t fully replace. So those options don’t capture what really makes material understandable. In practice, combine plain language with concise structure and accessible typography, and consider patient testing to verify that the material communicates as intended.