Final answer:
The term referred to in the question is 'Expert power', which is based on a person's expertise and ability to influence others due to their knowledge or experience in a particular area.
Step-by-step explanation:
The concept referred to in the question is expert power, which is the ability of a group or individual to influence a consumer due to the group's or individual's knowledge of, or experience with, a specific subject matter. Expert power is a type of power that comes from the skills or expertise that a person possesses, rather than from formal positions of authority, coercive means, or personal affiliations. It is one of several types of power that can affect social and professional relationships as well as consumer behavior.