Which of these is a kind of personal power?

Expert power is a type of personal power that arises from an individual's specialized knowledge, skills, or expertise in a certain area. This form of power is influential because it is based on the perception that the individual possesses superior knowledge or abilities that others rely on for guidance or decision-making. For instance, in a group or organization, someone with expert power may be sought out for their opinion or advice due to their competence in a specific field, fostering trust and respect from their peers.

In contrast, reward power, legitimate power, and coercive power are often considered positional powers because they derive from the authority associated with a particular role or title rather than personal characteristics. Reward power comes from the ability to grant rewards or incentives; legitimate power is based on a person's official position or role within an organization; and coercive power involves the ability to impose penalties or consequences. These forms of power do not inherently rely on personal expertise or skills, thus distinguishing expert power as a unique and essential aspect of personal influence within the entertainment industry and other fields.