This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Health education & planning, Subject name: Social & Preventive Medicine
Which one of the following is not a source of managers power? 
Select and explain. 
A. Reward, B. Coercive, C. Legal, D. Efferent
D: Efferent
Answer: D: Efferent 
Explanation: There are five sources of power people use over other people, including legitimate, reward, coercive, expe and referent. Legitimate power is also known as positional power. It&;s derived from the position a person holds in an organization's hierarchy.Reward power arises from the ability of a person to influence the allocation of incentives in an organization.Coercive power is derived from a person&;s ability to influence others threats, punishments or sanctions.Expe power is derived from possessing knowledge or expeise in a paicular area.Referent power is derived from the interpersonal relationships that a person cultivates with other people in the organization.