Solution
Option 1 -> Principle of harmony of objectives deals with aligning organizational goals with individual goals, which is not the focus here.
Option 2 -> Principle of unity of command states that each subordinate should receive orders from only one superior, not mentioned in the statement.
Option 3 -> Principle of managerial communication emphasizes effective communication across all levels, clear instructions, and creating understanding among subordinates, which matches the scenario.
Option 4 -> Principle of leadership focuses on influencing and guiding people, not specifically on communication and instruction clarity.
Hence, Option 3: Principle of managerial communication -> Adarsh maintained "effective managerial contact across all levels" and "conveyed clear instructions to create total understanding" - these actions directly highlight effective communication between management and subordinates at all organizational levels, which is the essence of the principle of managerial communication -> correct