Which term refers to an early, test version of a product used to validate ideas before full-scale production?

• A. Final product
• B. Prototype
• C. Diagram
• D. Circuit

Answer: (B)

Making an early, test version of a product is called a prototype. Prototypes let you try out ideas, see how things might work in the real world, and gather feedback to improve the design before investing in full-scale production. They help you identify problems and validate assumptions without building the final product. The final product is what you release after testing and refinement. A diagram is just a drawn plan or schematic to communicate structure, not a working version. A circuit is a specific arrangement of electrical components, and while electronics can be prototyped, the term itself refers to the test model, not the concept of an early version.