Final answer:
In the film '12 Angry Men', concepts such as persuasion, open-mindedness, and empathy are demonstrated in leading without authority.
Step-by-step explanation:
In the film '12 Angry Men', several concepts and strategies related to leading without authority can be observed. One concept is the use of persuasion and argumentation to influence others. For example, Juror 8 uses logical reasoning and evidence to convince the other jurors to reevaluate their initial guilty verdict. Another concept is open-mindedness, as Juror 8 encourages the other jurors to consider alternate perspectives and challenge their assumptions. Finally, the film demonstrates the power of empathy, as Juror 9 shows compassion towards an elderly juror and helps him find the courage to express his doubts.