Which of the following best describes a high-fidelity prototype?

A high-fidelity prototype is best described as a fully interactive model that closely resembles the final product. This type of prototype typically incorporates detailed design elements, such as colors, typography, images, and functionality, providing users with an experience that is very similar to using the actual application. It allows stakeholders to interact with the prototype, offering valuable insights into the usability and functionality of the proposed solution. Such prototypes are often used in later stages of development to gather feedback, refine user experience, and ensure alignment with user expectations.

In contrast, the other options represent different stages or forms of prototyping. A simple black-and-white layout indicates a lower fidelity, focusing more on structure than on visual nuances. A draft version with minimal interactivity also falls into a lower fidelity category, lacking the detailed interaction needed to represent the final product accurately. A comprehensive specification document, while critical for development, does not offer a visual or interactive experience, and thus does not align with the characteristics of a high-fidelity prototype.