Final answer:
Centralization in management refers to the concentration of decision-making authority at the top of an organization's hierarchy, thus decreasing the role of subordinates.Hence, the correct answer is 'c.
Step-by-step explanation:
Henry Fayol identified 14 principles of management, one of which is centralization. The concept of centralization is best described by the decision-making power being concentrated within a few individuals at the top level of the organizational hierarchy. Hence, the correct answer is 'c. Decreasing the role of subordinates in decision making'. In a highly centralized organization, the top managers hold the majority of the decision-making authority and restrict the autonomy and decision-making power of lower-level employees.