Describe a design criterion.

A design criterion is defined as a guideline or standard that a design must meet to be considered successful. This concept is essential in engineering design, as it sets forth the specific metrics, requirements, and expectations that the final product should fulfill. Design criteria may cover various aspects, including functionality, aesthetics, safety, usability, cost, and sustainability. They serve as benchmarks against which the design can be evaluated, ensuring that the end product effectively meets the needs and requirements of its intended users and stakeholders.

This structured approach helps designers to focus their efforts on creating solutions that are not only innovative but also practical and effective. By adhering to established design criteria, teams can avoid arbitrary decisions and ensure their designs are robust, reliable, and successful in the market. The other options do not accurately capture the essence of what constitutes a design criterion; they either suggest randomness, list problems, or focus on marketing strategy, which are not the core function of design criteria in engineering.