Final answer:
A prototype is a trial working model of a design that is meant to be useful in evaluating the design and discovering flaws and weaknesses.
Step-by-step explanation:
A prototype is a trial working model of a design that is built to test design decisions and identify potential problems. It is not meant to be perfect, but it is meant to be useful in evaluating the design and discovering flaws and weaknesses. Prototypes can be physical or virtual, and they are used to gain understanding of the design and confidence that it will work as expected.