Which of the following describes how intuitive and easy to learn an interface is?

Learnability refers to how intuitive and easy it is for users to understand and navigate an interface. This concept emphasizes the speed and ease with which new users can grasp how to use a system, enabling them to accomplish their tasks without extensive instruction. A well-designed interface should allow users to quickly understand its functionality and begin using it effectively, thereby reducing the learning curve.

Affordances relate to the natural cues an interface provides about how it can be interacted with, such as buttons that appear clickable. Predictability involves how easily users can anticipate the outcomes of their interactions based on their previous experiences, which is important for trust and familiarity but not exclusively focused on initial learning. Forgiveness refers to how well an interface allows users to recover from errors, promoting user confidence over time rather than the ease of initial learning. Thus, learnability specifically captures the essence of how quickly and effortlessly a new user can become proficient in using an interface.