During the Initiating a Project process in PRINCE2, the Project Plan provides the Business Case with necessary details, including cost estimates. This plan outlines the overall scope and timing of the project and sets the baseline for project management activities, including cost control. References: PRINCE2 Foundation manual, PRINCE2 official resources

The principle of "Ensure continued business justification" in PRINCE2 is designed to ensure that a project remains aligned with the objectives of the investing organization(s) throughout its life. This principle requires that the business case be reviewed continually to confirm that the project remains viable and desirable in light of evolving business circumstances and objectives.References: (PRINCE2 7 Foundation Handbook, AXELOS)

The purpose of the 'Directing a Project' process in PRINCE2 is to enable the project board to be accountable for the project's success by making key decisions and exercising overall control while delegating the day-to-day management of the project to the project manager. This includes the authority to initiate and close the project, deliver stage boundaries, and be updated on project progress.References: = PRINCE2 7 Foundation handbook and online resources

This statement is correct as it highlights the individual differences among team members who may have similar skills and experiences but approach tasks differently. This variability can influence the way tasks are executed within a project, impacting team dynamics, project management approaches, and ultimately the project's success. Recognizing and managing these differences are crucial for effective team collaboration and project delivery.References: (PRINCE2 7 Foundation Handbook, AXELOS)

In PRINCE2, the management of ongoing changes to the project ecosystem involves adapting the project's approach and scope based on real-time information and challenges that arise during the lifecycle of the project. This step is critical when new tasks or changes in tasks are identified, as outlined by the project manager. This ensures that the project remains aligned with its intended outcomes and can adapt to internal and external influences effectively.References: = PRINCE2 7 Foundation Training Manual and official PRINCE2 website documentation