On a large project with a difficult client, the project manager realizes that a bit more time and funding for minor changes could deliver 25% of benefits early. How should the project manager proceed?

The project manager should prepare a business case and present it to the client because this approach aligns with good governance and client-centric project management. A business case quantifies the benefits (25% early benefits) against the costs (additional time and funding for minor changes), allowing the client to make an informed decision. Implementing changes without client approval (Implement all changes and then present the results to the client) is risky and can damage trust, especially with a difficult client. Focusing solely on current milestones (Focus on the current project milestones) ignores a potential opportunity for value delivery. Updating the project management plan without client approval (Update the project management plan to include the new work) is premature and bypasses the necessary decision-making process.