What is active content primarily used for on a computer?

Active content is primarily used to provide an interactive experience on a computer. This type of content includes elements such as Java applets, Flash objects, and scripts that execute within web pages or applications, enabling dynamic features that enhance user engagement. For example, active content allows for interactive forms, animated graphics, and real-time updates, which can significantly improve how users interact with software and web applications.

While the other choices have their own merits, they do not capture the main purpose of active content. Improving security features is more related to protective measures against threats rather than user interaction. Enhancing system performance typically involves optimization techniques rather than the interactivity provided by active content. Storing data locally is a function associated with data management rather than interactivity. Thus, the defining characteristic of active content lies in its ability to create engaging and interactive experiences for users.