At initiation of a product improvement project, historical data show a similar project produced a worse user experience than the previous version. How can the project manager prevent that outcome in the new project?

Defining a user focus group as external stakeholders with high influence is the best option because it directly addresses the historical issue of a poor user experience by integrating user feedback early and continuously. This proactive approach ensures user needs and expectations are understood and incorporated throughout the project lifecycle, preventing a repeat of past mistakes. Hiring external users for acceptance testing is reactive and occurs too late to influence core design. Engaging a consultant for a benefits analysis informs the charter but doesn't guarantee user experience improvement. Recording a high-level risk after WBS completion is also too late for proactive user experience design and doesn't directly involve users in the solution.