Answer:
Transformational leader
Explanation:
Transformational leadership is the leadership in which a leader creates, motivates and encourages the employees to create, change and innovate new ideas that help in development or growing in an organization. These are the leaders who encourage their employees without micromanagement. They believe in their employee's ability to make the right decision on their job.
The transformational leadership was given by Downton in 1973.
Thus here in the above statement, Andy's subordinates support him because he is a transformational leader who positively encourages their employees.