Final answer:
The manager in the case study failed by promoting a toxic work environment, as they allowed abusive behavior to persist, undermining team dynamics and overall organization health.
Step-by-step explanation:
When analyzing the case study where a team leader was abusive toward members of his team, the manager failed by promoting a toxic work environment. This choice is reflective of a management style that allows negative behaviors to undermine team collaboration, trust, and communication, elements that are key to a successful workplace. Rather than cultivating a positive, productive space, the manager's failure to address the abuse contributes to a culture that is detrimental to team dynamics and the overall health of the organization. Good managers should be approachable, encouraging, transparent, and must foster open communication. They are also expected to address conflicts and negative behaviors promptly to maintain a supportive atmosphere. When a manager overlooks abusive behaviors, it is a clear sign of leadership failure, especially since effective leadership involves creating environments where employees feel valued and safe to contribute their best work.