Refer to explorations in literature for a complete version of the text. read this excerpt from "a letter from birmingham jail" by martin luther king jr.: the nations of asia and africa are moving with jetlike speed toward gaining political independence, but we still creep at horse-and-buggy pace toward gaining a cup of coffee at a lunch counter. how does king's use of rhetoric best advance his viewpoint? a) the use of two related transportation metaphors suggests how king's own thinking on these issues progressed forward. b) the use of charged language suggests king's growing excitement over the progress that is at last being made. c)the stark contrast of the two metaphors shows how disparate the two movements are in gaining progress. d)the hostile nature of the charged language indicates that the lack of progress is making king consider violent action.