Short time frames (time boxes) that typically last from one to four weeks are called Multiple Choice increments or scrums iterations or sprints waterfalls or scrums iterations or increments waterfalls or sprints When teams reflect, learn, and adapt to change, when their work updates the plan, they are following the agile project management principle of Multiple Choice continuous delivery continuous improvement continuous updating o continuous learning continuous adapting to change is the Agile principle that prescribes the project team learning, reflecting and adapting to change within the Project. Multiple Choice Continuous Improvement Experimentation and Adaption Self-Organization Focus on Customer Value Servant Leadership