The __________ principle, as defined by Henri Fayol, states that there should be a clear and unbroken line of communication from top to bottom in the organisation's hierarchy of authority.

A) Hawthorne
B) communication control
C) unity of direction
D) unity of command
E) scalar chain

Scalar Chain Principle

A concept in organizational management that asserts a clear and unbroken line of authority within the hierarchy of an organization from the top to the bottom.

Henri Fayol

A French industrialist and a pioneering management theorist who developed a general theory of business administration.

Hierarchy of Authority

A system in which different positions are ranked relative to each other within an organization, with higher levels having more power and responsibility.