Solution
Option 1 -> Discipline refers to obedience, respect for authority, and adherence to organizational rules, not specifically about communication channels.
Option 2 -> Order means systematic arrangement of resources and people in their right place, focusing on organization rather than communication flow.
Option 3 -> Equity deals with fair and just treatment of all employees, ensuring kindness and justice in the workplace, unrelated to communication hierarchy.
Option 4 -> Scalar Chain establishes the formal line of authority and communication from top management to lower levels, requiring communication to flow through official hierarchical channels.
Hence, Option 4: Scalar Chain -> This principle defines the chain of command in an organization where communication must follow the prescribed hierarchical path from superior to subordinate, ensuring proper flow of information through official channels -> correct