Which aspect involves the visual elements that users interact with?

User Interface (UI) refers specifically to the visual elements with which users interact when using a product or application. This includes buttons, icons, menus, and any other graphic elements that contribute to the layout and overall look of the interface. UI focuses on the design and functionality of these components, ensuring they are intuitive and visually appealing to enhance the user's experience.

While User Experience (UX) encompasses the overall experience a user has with a product, including usability and how enjoyable or efficient the product is to use, it is a broader concept that includes more than just visual aspects. Design Aesthetics pertains to the artistic and stylistic elements of a design, which may influence UI but are not limited to the interactive components. Visual Experience can refer to how users perceive the visual aspects of a product but lacks the specific focus on the functional elements that UI represents. Therefore, the distinction of UI as the correct answer highlights its primary role in the tangible, interactive portions of a digital product that users engage with directly.