MLK Jr most likely starts the text by using ethos to Set a serious tone that will bring the severity of the war to the forefront. To show his expertise on the topics of economics and foreign relations Reinforce his stance on the Vietnam War and justify bringing up the topic
To grab the attention of his audience

The main themes of the play are: fate and free will with the inevitability of oracular predictions is a theme that often occurs in greek tragedies the conflict between the individual and the state similar to that in sophocles’ “antigone” and   people’s willingness to ignore painful truths both oedipus and jocasta clutch at unlikely details in order to avoiding facing up to the inceasingly apparent truth and sight and blindness the irony that the blind seer tiresius can actually “see” more clearly than the supposedly clear-eyed oedipus, who is in reality blind to the truth about his origins and his inadvertent crimes.

The correct answer is b

It's true because this a true statement