SDLC stands forOptionsSystem Design Life CycleSystem Development Life cycleSoftware Development Life CycleSoftware Design Life Cycle

Analysis of Options

1. System Design Life Cycle: This term is not widely recognized as a standard definition for SDLC. It refers more to the design phase rather than the entire life cycle of system development.

2. System Development Life Cycle: While this could be a close contender, it's still not the most common phrasing of SDLC.

3. Software Development Life Cycle: This is the most accurate expansion of the acronym SDLC. It encompasses the complete process of software development, including planning, design, development, testing, deployment, and maintenance.

4. Software Design Life Cycle: Similar to the first option, this focuses narrowly on the design aspect rather than the whole developmental process.

Final Answer

The correct option for SDLC is Software Development Life Cycle.