Which of the following characteristics defines the Waterfall methodology?

The Waterfall methodology is characterized by a strict sequence of events in the software development process, which is why the correct answer is focused on this aspect. In this approach, each phase of the project must be completed before the next begins, creating a linear progression that does not allow for revisiting earlier stages without significant disruption. This structure is beneficial for projects with well-defined requirements and clear objectives, as it emphasizes planning, documentation, and a systematic approach to development.

In contrast, methodologies that emphasize iterative delivery, flexibility for changes, and rapid feedback, such as Agile or Scrum, allow for ongoing adjustments throughout the development process. These approaches value adaptability, encouraging teams to respond to changing requirements or user feedback regularly, which is not typical in the Waterfall methodology.