Compare top navigation, side navigation, and bottom navigation patterns; give use cases.

• A. Top nav for global actions; side nav for drill-down and dashboards; bottom nav for mobile with limited space; choose based on content and device.
• B. Top nav should be avoided; side nav for mobile; bottom nav only for desktop.
• C. All three should be used simultaneously on every page.
• D. Bottom nav replaces breadcrumbs.

Answer: (A)

Choosing where to place navigation patterns depends on how your content is organized and how users will interact with the site on different devices. Top navigation works best for exposing global actions and the main site sections you want accessible from any page; it stays visible and helps users orient themselves quickly. Side navigation is ideal when the app or site has a deeper structure or a dashboard with many sections, because it can display hierarchy and allow users to drill down without leaving the page, and it can be collapsed on smaller screens to save space. Bottom navigation shines on mobile where screen space is tight and you want quick access to a small set of primary actions placed where your thumb can reach them.

For example, an e-commerce site can use a top navigation bar for categories and account links, a side navigation area for filters and advanced options, and a bottom navigation strip on the mobile app to provide quick actions like Home, Categories, Cart, and Profile. Avoid thinking you must use all three patterns on every page; they can clutter the experience. Also, bottom navigation is not meant to replace breadcrumbs or other hierarchical indicators, which help users understand where they are within the site.