What does 'front-end' refer to in web development?

In web development, 'front-end' refers to the part of a web application that users interact with directly. It encompasses the visual elements and user interface design, including the layout, colors, fonts, and overall aesthetics. This also covers the functionality that enables user interaction, such as buttons, forms, and navigation menus. The front-end is built using technologies like HTML, CSS, and JavaScript, which work together to create an engaging and accessible experience for users.

The significance of the front-end lies in its role in determining how users perceive and engage with an application. A well-designed front-end can enhance user experience, making an application not only functional but also enjoyable to use. This is why choice C accurately captures the essence of what 'front-end' means in the context of web development.