Describe the term 'user interface' (UI).

The term 'user interface' (UI) refers to the visual elements involved in the interaction between users and digital products. This encompasses all the components that users interact with on a screen, including buttons, icons, text fields, and other visual elements that guide the user through an application or website. A well-designed user interface ensures that these elements are intuitive and visually appealing, allowing users to navigate easily and understand how to use the product effectively.

While the option about how users interact with any media captures a broader sense of interaction, it does not specifically focus on the visual design aspects that define UI. The concept of storyboarding relates more to planning and organizing content rather than the direct interaction between users and digital products. Similarly, audience demographics concern the characteristics of the target users and do not define the user interface itself. Overall, the focus of UI is specifically on the visual elements that facilitate user interaction with digital products, making the correct answer the most accurate representation of the term.