A value stream map is a lean tool that visually maps out the steps in a process from start to finish to identify areas of waste, delays, or inefficiencies in delivering value to the customer. In Disciplined Agile (DA), value stream mapping helps the team identify problem areas where waste occurs, such as bottlenecks, excessive handoffs, or unnecessary steps that do not add value to the customer. By recognizing these problem areas, the team can focus on improving or eliminating them to optimize the value delivery process. Options A, C, and D provide specific strategies for improving processes but do not encompass the broad benefit of identifying problem areas in realizing value.