How can you optimize your website for accessibility by visually challenged persons on any device?

• A. Incorporate white space and strong contrast between text and background
• B. Place navigation buttons at the top and bottom of web pages
• C. Make buttons of adequate size and have a small amount of inactive space between targets
• D. Support external physical keyboards or alternative on-screen keyboards

Answer: (A)

The main idea here is making text readable for users with visual challenges across all devices. Strong contrast between text and its background ensures characters stay clearly distinguishable, even on small screens or under various lighting. White space around lines of text and UI elements reduces crowding, helping people with low vision or those using magnification focus on what matters without losing track of content. Together, high contrast and generous white space directly improve readability and navigation for visually challenged users, no matter whether they’re on a phone, tablet, or computer.

Other options touch on related usability aspects, like where navigation sits or how large targets are, or they support different input methods, but they don’t address the core need of making text easily readable and content visually scannable across devices as effectively as using strong contrast paired with ample white space.