What type of physical model is designed to test if a product idea will work, irrespective of its resemblance to the final product?

The correct choice is a functional model. A functional model is specifically created to demonstrate the intended functionality of a product, allowing designers and engineers to test how well a concept works in practical applications. This type of model focuses on the underlying mechanics and operations rather than the visual appearance or detailed design features of the final product.

For example, in product development, a functional model may include the essential components and systems that allow stakeholders to evaluate performance, usability, and efficiency before moving on to refined versions of the product.

This contrasts with other types of models. A prototype typically serves as a preliminary version that closely resembles the final product, intended for testing and user feedback. A scale model, on the other hand, is often used to represent a product at a reduced size and aims to showcase physical dimensions without necessarily functioning like the final product. An aesthetic model emphasizes the visual and design elements to convey how the product will look but may not demonstrate its functionality. Hence, a functional model is uniquely suited for assessing whether a product idea will work as intended, regardless of its likeness to the final version.