Answer:
Centralization refers to the hierarchical level within an organisation that has authority to make decisions. When decision making is kept at the top level, the organisation is centralized.
Explanation: Centralization or centralization is the process by which the activities of an organisation, particularly those regarding planning and decision-making, framing strategy and policies become concentrated within a particular geographical location group.
Centralization of authority means the power of planning and decision making are exclusively in the hands of top management. On the other hand, Decentralization refers to the dissemination of powers by the top management to the middle or low-level management.