Answer:C - Planning Stage
Explanation: The System Development Life Cycle is a model of which organisations use when developing a new system.
SDLC has 5 Phases or steps and they include:
- Planning
- Analysis
- Design
- Implementation
- Maintenance
Each stage of SDLC has its importance in the system development.
Planing: At this state, the problem is identified, options of solutions are given and analysed as well as the possible outcomes are considered.
Analysis: At this stage the various options given at the planning stage are analysed and validated
Design: At this stage, the analysed options are designed to give a logical evaluation of the model to be adopted
Implementation: At the state, the design is implemented and tested
Maintenance: At this state, the errors are corrected and validated.