Rapid application development is primarily focused on:

Rapid application development (RAD) is a software development methodology that emphasizes the rapid development of prototypes and iterations of software applications. The primary focus is to quickly create functional versions of the software that can be tested and evaluated. This contrasts with traditional methods that often involve extensive planning and documentation before any actual coding starts.

Creating prototypes allows users to visualize and interact with an early version of the application, which fosters feedback and collaboration. This iterative process enables developers to refine the software based on user input, enhancing the chances of meeting user needs and expectations.

In contrast, focusing on system documentation, conducting user interviews, or finalizing system requirements is more aligned with traditional development methodologies that prioritize thorough planning and documentation before the actual development process. While these activities are important, they do not capture the essence of RAD, which is centered around the rapid creation and testing of prototypes to quickly deliver usable software.