Concept:SDLC stages follow a fixed, ordered sequence where each phase must be completed before the next begins.
Explanation:The stages of the Software Development Life Cycle are implemented sequentially.
This means each stage flows directly into the next stage in a defined order.
There is no overlapping because the output of one stage is needed as the input for the next stage.
For example, requirements must be fully gathered before design can start.
Likewise, coding should not begin until the design stage is concluded.
This orderly approach helps developers track progress and improve each stage based on results from earlier stages.
Answer:B. sequentially, without overlapping.