Answer:
Legitimate, Expert, Referent
Explanation:
John French and Bertram Raven are two famous social psychologists who recognizes five classification of power in the society that people have. They are reward power, coercive power, legitimate power, referent power, and expert power.
The person who is the leader or the CEO of ta company has the Legitimate power. He has the power to influence others. This power results from the roles or positions that the person have.
A person who has special training in a given subject has Expert power. They have understanding and knowledge in a given subject.
The person who uses praise has Referent power. Other people grants other person Referent power because of his physical appearance.
Thus the answer is Legitimate, Expert, Referent.