Based on the scenario described, it seems that Mateo is looking for a leader who can effectively manage a difficult team and keep them focused, which suggests that he values adaptability and the ability to respond to the specific needs of the team. This aligns most closely with situational leadership theory. This theory emphasizes that different situations require different leadership styles and that effective leaders adjust their approach based on the context and the readiness of their team.
Thus, the best answer would be:
Situational leadership theory.