What is the primary function of navigation in a user interface?

The primary function of navigation in a user interface is to guide users in accessing information. Effective navigation allows users to move through a website or application seamlessly, helping them locate the content or features they need with ease. This guidance enhances the overall user experience by ensuring that users can efficiently fulfill their tasks without unnecessary confusion or frustration.

While options like providing entertainment, integrating social media, or enhancing product marketing may play roles in certain contexts, they are not the main purpose of navigation. Navigation primarily focuses on information retrieval and task completion, which are critical components of usability in design. By centering on guiding users, navigation ensures that users can navigate intuitively and find what they're looking for promptly.