Which of the following is a method to judge quality?

Design and functionality serve as essential methods for judging the quality of a product. When assessing quality, it's crucial to consider how well a product is designed and how effectively it performs its intended functions. High-quality products typically showcase careful design elements, such as usability, aesthetics, and ergonomic considerations, ensuring that they meet or exceed user expectations.

Functionality is also a critical aspect; it refers to how well the product operates in fulfilling its purpose. Products that are designed thoughtfully often lead to a better performance, greater user satisfaction, and a stronger perception of quality in the eyes of consumers. This correlation between design, functionality, and perceived quality underscores why this choice stands out as a method for evaluating the quality of goods or services.