According to Fiedler's contingency theory of leadership, which of the following statements is true of task-oriented leaders? Select one: a. They are more effective in favorable situations because the task is not clear to everybody. b. They are more effective in situations of moderate favorability. c. They are more effective in a situations where they have little authority over subordinates and cannot evaluate their work or reward them. d. They are more effective when a situation is highly unfavorable because a great deal of structure and task direction is needed.