Option 1 -> Organising involves structuring the organization, defining roles, and establishing relationships within the management hierarchy to achieve organizational goals.
Option 2 -> Planning focuses on setting objectives and determining strategies to achieve them, not on modifying hierarchical relationships.
Option 3 -> Staffing deals with recruiting, selecting, and developing personnel to fill positions, not with modifying organizational structure.
Option 4 -> Controlling involves monitoring performance and taking corrective actions, not restructuring management relationships.
Hence, Option 1: Organising -> Organising is the management function where companies establish and modify the internal organizational structure, including the management hierarchy, authority relationships, and reporting structures to align with organizational goals and ensure efficient coordination -> correct