A preview of the main points. The body contains the main points of the argument with supporting points and examples. A reinforced statement of the thesis. A close with impact. Building Source Credibility Speakers need to establish credibility , their authority on the subject.
Competence is familiarity with the subject.
Trustworthiness is honesty with the audience. Practicing A speaker must Know the lines. Remember the cues. Pull words, action, and visual aids into a harmonious whole. Choosing a Method of Delivery Speakers use impromptu delivery if they have been given little time to prepare.