The correct answer is: D. institutional leader.
An institutional leader is a leader who exercises his power over his followers because of his position held in the organizational hierarchy. He is a formal leader who is appointed or elected to a position of authority. He has the power to make decisions and to enforce those decisions. He is accountable to the organization for his actions.
An autocratic leader is a leader who exercises his power over his followers without consulting them. He makes decisions without considering the views of his followers. He is not accountable to his followers.
An intellectual leader is a leader who is respected for his knowledge and expertise. He is a charismatic leader who is able to inspire and motivate his followers. He is not necessarily a formal leader.
A liberal leader is a leader who is tolerant of different opinions and beliefs. He is a democratic leader who believes in the power of the people. He is not necessarily a formal leader.