Answer:
D. autocratic leader.
Step-by-step 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.