Dr. Haynes was a college president who would openly tell the members of the faculty and staff that he would "give them the world" if they would implement his policies without complaint. Everyone who worked at the college knew that if they openly disagreed with Dr. Haynes, they would be placed on his "blacklist." Dr. Haynes best exemplified a(n):

A. free-rein leader.
B. consultative leader.
C. participative leader.
D. autocratic leader.

D. autocratic leader.          

Explanation:

Autocratic leadership is also referred to as "authoritarian leadership" and is determined as a significant leadership style that is being distinguished as an individual's tendency to have control over all the decisions and related input from specific group members. Therefore, autocratic leaders are typically considered as making choices based on their judgement and ideas and occasionally accepts advice from their followers.

As per the question, Dr Haynes best exemplified an autocratic leader.

there is an explationation of this on a site called crash   course world history 1