Which of the following are key stakeholders in a temporary Project Office?

The P3O® Foundation (2013) manual identifies business as usual staff, suppliers, and Project Board members as key stakeholders in a temporary Project Office. Section 5.3.3 states, "Key stakeholders in a temporary Project Office include business as usual staff affected by the project, suppliers providing resources, and Project Board members overseeing delivery." The Organization Portfolio Office (1) is a strategic entity, not a direct stakeholder in a temporary office. The 2013 edition focuses on operational stakeholders impacting or impacted by the project, making D the correct choice. This ensures effective stakeholder engagement during the project lifecycle.