Thich of the following is true of the cultural context in public speaking? a. In the United States, the Blackfeet hold that everyone in the community is on equal footing and thus has the opportunity to speak: b. Non-Westem ways of speaking in public emphasize the individuality of the speaker over community. c. In non-Western speech communities, "speakers" and "audiences" are on a relatively equal footing in terms of social stafus. d. African speeches are one-point speeches with a great deal of supporting material