What is card sorting used for in UX design?

Card sorting is a valuable technique in UX design primarily used to help design or evaluate information architecture. It involves participants organizing topics or items into groups that make sense to them and may involve labeling these groups. This user-centered method provides insights into how users think about information structures, allowing designers to align website navigation and content organization with user expectations and cognitive models.

The primary goal of card sorting is to enhance usability through informed structure decisions in the layout of the content. By understanding how users categorize information, designers can create a more intuitive experience that aligns with user mental models, leading to improved navigation and organization within a digital product.

Other options focus on different aspects of the user experience or business strategy but do not directly pertain to the functionality and purpose of card sorting. For instance, evaluating user satisfaction levels, determining marketing strategies, and assessing design aesthetics are distinct areas that do not incorporate the primary objective of card sorting. Thus, the emphasis on information architecture in option B accurately captures the essence and primary application of card sorting in UX design.