Final answer:
A laissez-faire leader allows the group to function autonomously, which suits motivated and mature participants but risks lack of progress without proper self-direction.
Step-by-step explanation:
A laissez-faire leader adopts a hands-off approach, providing autonomy to group members to make their own decisions and manage themselves. This leadership style can be effective in situations with highly motivated and mature participants who are clear about their goals and guidelines.
However, it carries the risk of group dissolution and lack of progress if the members are not adequately self-directed. Unlike the laissez-faire style, the authoritarian leader dictates orders and assigns tasks with minimal input from group members, while democratic leaders encourage group participation and consensus. Each leadership style has its context where it might be most effective.