Concept:Line authority is the power given to a superior to direct and control subordinates.
Explanation:In an organization, authority flows downwards through the chain of command.
A superior exercises direct command over a subordinate by giving orders and expecting them to be carried out.
This type of relationship is known as line authority.
It is different from staff authority, which is advisory and supportive, and lateral authority, which operates between peers.
Thus, the direct authority of a superior over a subordinate is line authority.
Answer:B. line authority