What term describes the subjective experience of users interacting with an information system?

The term that describes the subjective experience of users interacting with an information system is usability. Usability focuses on how well users can effectively and efficiently achieve their goals when using a system, as well as how satisfying that experience is. It encompasses aspects such as intuitiveness, ease of learning, and the overall satisfaction of users.

A system that scores high on usability ensures that users find it pleasant and comfortable to use, ultimately leading to a more productive and engaging interaction. This is critical in information systems design since the success of a system is often measured by how easily users can navigate and accomplish their tasks within it.

The other choices relate to different aspects of information systems: accessibility pertains to how easily users can access and benefit from the system, functionality refers to the features and capabilities that the system offers, and interactivity describes the level of engagement between the user and the system during their interaction. While these elements are vital, they do not capture the holistic subjective user experience in the same way that usability does.