Which of the following best describes a wireframe?

A wireframe is best described as a low-fidelity representation of a site's structure and functionality. Wireframes serve as a blueprint for a website or application, outlining the basic layout and visual components without focusing on detailed design elements or aesthetics. They illustrate the placement of key elements such as headers, footers, navigation, and content areas, allowing designers and stakeholders to prioritize functionality and usability early in the design process. This foundational aspect of wireframes is crucial for aligning the team's vision before moving on to higher fidelity prototypes or final designs.

A wireframe's purpose is not to provide a detailed visual representation, which is more characteristic of final design mockups or prototypes that showcase visual styles and interactions. It also does not serve as a comprehensive user research document or a coding guide, as those documents focus on different aspects of the user experience design process and the development phase.