The correct answer is B. capture knowledge to use in other areas . In the CSSBB control-phase material, lessons learned are part of the sustain-improvements process and include identifying what the team did well, what should be done differently in the future, and whether other processes or applications should be reviewed for similar improvements. The results are retained with project documentation and archived for future reference.

The supplemental Lean Six Sigma material states this even more directly: the documentation plan is necessary so that what has been learned from the project is captured, shared, and institutionalized , becoming part of the organization’s knowledge base. It specifically includes purposes such as sharing information , managing best practices , and applying lessons learned to new projects . This shows that lessons learned are intended to transfer knowledge beyond the original team and project. They are not primarily for SPC implementation, singling out resistant employees, or identifying teams for rewards. Therefore, the best verified answer is B , because lessons learned help preserve and reuse organizational knowledge in other projects and areas.