Andy can best be described as transformational leader.
Option A
Step-by-step explanation:
Tranformational leader is the one who works along with the team members to establish the required change, creating a vision to train or guide by inspiring the team and executing the change.
Here it has been given that Andy’s subordinates feels comfortable to work for him and he inspires them.
The other options,
Servant: The objective of the servant type of leader is to serve his subordinates.
Authentic: They create honest relationships with their subordinates and promote openness.
Transactional: The objective of transactional leader is to promote compliance by subordinates via both punishments and rewards.
Interactive: They involve their subordinates in the tasks and make them to understand goals and tasks.
So, it can be concluded that, Andy is a transformational leader.