Final answer:
The ethical dilemma of Arjuna faced with his duty as a warrior and his moral hesitation to harm his kinsmen is a central theme in The Mahabharata, making the statement true.
Step-by-step explanation:
The statement that The Mahabharata is about the ethics of war and a dilemma faced by Arjuna, a warrior who must do his duty as a warrior, which entails killing his cousins, uncles, and teachers is True. Arjuna faces a profound ethical dilemma on the battlefield of Kurukshetra, where he hesitates to fight against his own kin. This moment sets the stage for the Bhagavad Gita, a section within The Mahabharata, in which Krishna imparts philosophical and moral guidance to Arjuna, explaining the nature of duty, righteousness, and the moral complexities of life. Throughout the epic, there are underlying themes exploring the individual soul in relation to the universal soul and the moral struggles human beings face.