A prescriptive specification is best described as which of the following?

• A. A general performance outcome requirement
• B. A summary of supplier capabilities
• C. A full description of every product, material, and service
• D. A statement of budget only

Answer: (C)

Prescriptive specifications require exact products, materials, and installation methods to be used. They provide a full description of every element to be supplied, including specific materials, brands or part numbers, and the exact procedures for how they are to be installed. This level of detail leaves little room for contractor discretion, ensuring uniform quality and compatibility across the project.

That level of specificity is what makes it the best description of a prescriptive specification. In contrast, a general performance outcome requirement focuses on the results to be achieved rather than the exact items or methods, a summary of supplier capabilities describes who might provide goods rather than what must be provided, and a statement of budget only concerns cost, not the technical details of what is required.