A specification that specifies the function, performance and interfaces associated with a product but not the explicit design and materials needed is called what?

The correct choice refers to a performance specification, which defines a product's intended functions, required performance metrics, and necessary interfaces without detailing how the product should be designed or the materials to be used. This approach allows for flexibility in the design and manufacturing process, enabling different solutions to meet the same performance criteria. By focusing on what the product must accomplish rather than how to achieve those goals, a performance specification encourages innovation among designers and engineers while ensuring that the end product meets specific operational needs and quality standards.

In contrast, a design specification provides detailed instructions on how a product should be built, including materials and methods, while a technical specification may encompass a broader range of details including processes and procedures. A material specification specifically focuses on the types of materials that should be used in production, lacking the functional focus of a performance specification.