Which of the following is not one of the SDLC phases?

The correct choice indicates that "Reject" is not a phase of the Software Development Life Cycle (SDLC). The traditional phases of the SDLC include requirement analysis, design, implementation, testing, deployment, and maintenance.

In the context of SDLC, each phase has specific activities associated with it. For instance, in the design phase, system architecture and detailed design are developed to meet the defined requirements. The testing phase involves verifying that the software meets specified requirements and identifying any defects before the final release.

While it is crucial to determine whether a piece of software meets user requirements, this is accomplished during the testing and evaluation phases rather than through a standalone "Reject" phase. Decisions about rejection typically fall within the scope of review processes during testing or after deployment rather than being formally recognized as a distinct phase in the SDLC.