Which term is used to describe the field concerned with optimizing product user interaction?

• A. Ergonomics
• B. Anthropometrics
• C. CAD
• D. CIM

Answer: (A)

This question tests how designers optimize how people interact with products. Ergonomics is the field that studies how humans move, think, and respond when using tools and environments, and uses those insights to make products comfortable, safe, and efficient to use. That focus on fitting the design to people—how they grip, reach, view, and operate controls—is why ergonomics is the best answer for optimizing user interaction.

Anthropometrics provides the measurements of body size and proportions used in design, but it’s a data source rather than the field itself. CAD refers to computer-aided design, a tool for creating digital models. CIM stands for computer-integrated manufacturing, which links design with production through computers. While these are important in design and production, they don’t describe the discipline specifically dedicated to improving how users interact with products—that’s ergonomics.