Final answer:
Managers who struggle with building relationships tend to be authoritarian, which often leads to difficult work relationships and potential derailing in their managerial roles.
Step-by-step explanation:
Managers who derail due to an inability to build relationships with co-workers are most likely authoritarian. This leadership style is characterized by issuing orders and assigning tasks with little to no feedback from group members. Authoritarian leaders, while they can be effective in situations requiring quick decisions or specialized expertise, risk creating difficult work relationships and alienating workers due to their top-down communication pattern and lack of consultative or democratic approaches.