Which of the following best describes a prototype?

• A. It is the final product
• B. It is a plan for manufacturing
• C. It is an early model used to test ideas
• D. It is a marketing sample

Answer: (C)

A prototype is an early version of a product built to try out ideas and learn what works before making the final version. By testing the model, you can see how the design functions, how it feels in use, and where problems show up, which guides improvements and iterations. That makes the description “an early model used to test ideas” the best fit.

It isn’t the final product, so it’s not something you’d sell or deliver as the finished item. It’s not a plan for manufacturing, which would describe how to produce something, not a physical or digital test version. And it isn’t a marketing sample, which is meant to show or promote a product rather than test its design and function.