Daniel, a Six Sigma Black Belt, is involved in a project to reduce defects in a software development process. After implementing process improvements, he wants to ensure that the improvements are sustained over time. What should Daniel do to ensure the sustainability of process improvements in the long term? Question 4 options: Implement a control plan and continue to collect and analyze data Hold regular project review meetings to monitor progress Conduct additional training for team members on the improved process Archive all project documents for historical reference Update the project charter with new goals and objectives