In the event of an unexpected leave, it is important to collaborate with the product owner to reassess and reprioritize the sprint backlog. This approach aligns with the principles of Agile and Scrum methodologies, which emphasize flexibility and adaptability in response to changes. The project lead should avoid forcing the developer to postpone their leave (Option A) or hastily arranging for a replacement (Option B), as these actions may not align with the team's values or long-term productivity. Instead, by working with the product owner, the project lead can ensure that the most critical tasks are addressed and that the team's workflow is not disrupted. This may involve reassigning tasks among the remaining team members or adjusting the sprint goals to accommodate the change in capacity. References: (Based on the Agile principles and Scrum guidelines as outlined in PMI's resources12345.)