Answer: D) Tone.
Explanation: The tone of a poem, a story or even a sentence is the attitude of the text (the author's or speaker's attitude) towards the subject, theme, audience or even the characters. There are many differents kinds of tones: happy, sad, angry, positive, negative, objective, subjective, etc. According to that definition, the correct answer is the corresponding to option D.
It's either c or d because a and b are opinionated
I believe that the answer to the question provided above is that for a leader to work effectively one must know how to properly manage them , which is clearly depicted by the theme of the play.
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The question of how to practice morality and doing the right things falls under the category of ethics.