What design aspect focuses on user experience and comfort?

The focus on user experience and comfort is best captured by ergonomics. This design aspect prioritizes how products interact with and are used by people, aiming to create comfortable and user-friendly experiences. Ergonomics takes into account human anatomy, cognitive abilities, and limitations to design products that fit the user, enhancing comfort and efficiency.

For example, in furniture design, ergonomic principles would guide the shape and height of a chair to support proper posture and reduce strain, directly impacting the user's comfort while sitting for extended periods.

Other aspects, such as functionality, cost, and material selection, are important in design but do not primarily focus on the user's comfort and experience. Functionality pertains to how well a product performs its intended tasks, cost relates to the economic feasibility of producing a design, and material selection involves choosing appropriate materials for durability and aesthetics rather than user comfort directly.