What is the primary focus of the Development stage in the System Development Life Cycle?

The Development stage in the System Development Life Cycle (SDLC) is primarily centered on the actual implementation of the project, which includes coding and testing the program. This phase involves taking the requirements that were gathered and analyzed in the previous stages and translating them into a functioning software product. During this period, developers write code based on the design specifications and also perform various testing procedures to ensure that the software meets those specifications and functions correctly.

Testing within the Development stage serves several purposes, such as identifying bugs, ensuring that features are working as intended, and validating that the software adheres to the functional requirements laid out earlier. This stage is critical because it is where the theoretical aspects of the project are transformed into a practical solution that will eventually be deployed.

The other options, while important to the SDLC, are not the primary focus of the Development stage. Monitoring user feedback generally occurs post-deployment during the maintenance and evaluation phases, finalizing project documentation is often done after the development and testing are completed, and designing user interfaces occurs during the earlier stages of the SDLC, particularly in the design phase.