Which of the following best describes a wireframe?

A wireframe is best described as a low-fidelity visual layout that shows the structure of a product. It serves as a blueprint for understanding the basic framework and layout of a webpage or application, illustrating elements such as navigation, content placement, and functionality without delving into intricate design details or graphics. This makes wireframes crucial for early-stage design discussions as they allow stakeholders to visualize the basic structure and flow of the concept without distractions from colors or images.

Wireframes are typically created early in the design process to facilitate communication among team members and to gather feedback from users and other stakeholders. Their primary purpose is not to represent the finished product but to outline how users will interact with the interface and how different components will work together. This approach helps teams iterate on ideas and make necessary adjustments before moving to more detailed design stages.

In contrast, high-fidelity representations would involve more detailed graphics, animations, and interactions, making options that suggest a completed product or elaborate discussions less relevant to the definition of a wireframe. Thus, the low-fidelity nature makes option C the accurate choice.