Path-goal theory suggests that leaders should respond to autonomous group members with unstructured tasks from a ______.

A) directive style
B) supportive style
C) participative style
D) achievement style

Path-goal theory suggests that leaders should adjust their leadership style based on the characteristics of their group members and the task at hand. For autonomous group members (who are skilled and confident in their abilities), the best leadership style is participative. This involves involving group members in the decision-making process and giving them a sense of control and ownership over their work. Unstructured tasks (tasks that are open-ended or have multiple possible solutions) also benefit from a participative leadership style, as group members can bring their unique perspectives and ideas to the task. Therefore, the best choice is C, participative style.