Which design principle was missing in the Toys Department pages, causing confusion about where to click next?

• A. ERBU
• B. CARP
• C. KISS
• D. CMYK

Answer: (C)

Keeping it simple matters most when you want users to move through a page without hesitation. If the Toys Department pages clutter the screen with too many elements, links, or ambiguous clickable areas, people won’t know which thing to click next. The principle called Keep It Simple, or KISS, addresses exactly this: minimize distractions, use clear labels, and provide a straightforward path to the next action. In practice, you’d simplify the layout, make the main action obvious with a clearly labeled button, maintain consistent navigation, and add obvious cues like a breadcrumb or a single primary call-to-action to guide users smoothly forward. The other options don’t target navigation clarity in the same way: CMYK is a color model, and the remaining acronyms don’t describe a usability approach focused on reducing complexity and guiding user flow.