Why is leadership even required in a team setting

Paper instructions:
Please pick one of the following discussion questions and answer it with supporting examples. You should give at least one professional example – it can be your own or an example from your research.Please be sure to identify the question you are responding to.

1. What are the various types of challenges to decision-making in a team setting? In the example you give, what techniques were used to solve the problem. If no techniques were applicable, extend your creativity by suggesting what specific decision-making techniques can be used.

2. Why is leadership even required in a team setting? If there needs to be a leader, what specific type of leadership skill should be used? In the example you give, please explain what leadership style was or should have been demonstrated?