Answer: (B) Referent
Explanation:
Referent power is one of the form of interpersonal skills gain by the leader who has strong point of view and has ability to show leadership quality.
The reference power sometimes called as personal power in an organization where the leadership skills are important instead of control and also command.
The referent power is basically refers to the leader who show their interpersonal relationship with other in an organization.
Therefore, Option (B) is correct.
Because the Europeans had already been exposed to the diseases and had built an immunity to it, and the Native Americans hadn't, hope this helps