Which of the following best describes expert power in leadership?

The concept of expert power in leadership is best characterized by having superior knowledge. This form of power stems from a leader's specialized skills, expertise, or knowledge in a particular field. When leaders possess a high level of expertise, they are often looked up to and trusted by their followers, which enhances their influence and ability to lead effectively.

In contrast, options such as being based on a person's position or role refer to legitimate power, where authority comes from a formal position in an organization. The ability to give rewards is associated with reward power, which focuses on the capacity to provide benefits or incentives. Lastly, being perceived as caring relates to referent power, which is derived from personal relationships and the emotional bonds leaders have with their followers. Expert power stands out specifically because it is tied directly to the knowledge and skills that a leader possesses, making it a crucial source of influence in many contexts.