List the three types of credibility and discuss how a speaker can enhance credibility at each level

What will be an ideal response?

1) Initial: give attention to appearance, establish eye contact before speaking, and prepare a brief introduction that highlights your accomplishments that can be used to introduce you before you speak. 2) Derived: establish common ground, support arguments with evidence, and present a well-organized speech. 3) Terminal: end with eye contact and be prepared for questions.