Final answer:
Martin Luther King's concluding remarks on the Vietnam War reinforce his central claim that protesting the war is consistent with his advocacy for nonviolence and social equity, by showing how war efforts detract from crucial domestic initiatives.
Step-by-step explanation:
The conclusion of Martin Luther King's remarks on the Vietnam War serves to reaffirm the central claim that his protest against the war aligns with his advocacy for nonviolence and social justice. By reflecting on the consequences of the war—how it drains resources from anti-poverty programs—King reinforces his view that opposing the war is a necessary extension of his work towards civil rights. Furthermore, King's reference to The Great Society being 'shot down on the battlefields of Vietnam' encapsulates his sentiment that the war undermines domestic progress. Comparatively, the example of a call to action, as demonstrated in other texts, highlights the importance of unity and solidarity in rhetorical conclusions. This points towards option (a), stressing the need for collective effort and an inclusive approach. Therefore, by summarizing his standpoint and including a powerful metaphor, King concludes his argument with a strong personal and societal reflection.