In design iteration, what is the stage called that involves creating a working model to test ideas?

• A. Prototype
• B. Test
• C. Define
• D. Implement

Answer: (A)

Creating a working model to test ideas is prototyping. This stage turns concepts into something tangible you can hold, use, and evaluate, which helps you explore how the design looks, feels, and functions in real life. By testing a prototype, you can verify usability, fit with constraints, and overall viability, then learn what needs change without building the final product. Prototypes can range from simple sketches or paper models to interactive digital versions or physical samples, chosen to reveal the most critical questions early. Testing the prototype provides concrete feedback, guiding quick iterations and improvements before moving toward final production.