Explanation:
The types of supporting materials you can use are:
1. Testimony (expert or peer). When using testimony, it is best to make certain that the source is neutral and objective and is qualified on the subject at hand.
2. Examples (brief, extended, and hypothetical). Certain types of examples can personalize your ideas by adding HUMAN interest to them and to have a strong and powerful effect on listeners' beliefs and actions, examples should be vivid and concrete.
3. Statistics (for using statistics effectively you must explain any statistics that are used, use visual aids to clarify statistical trends and use statistics reasonably).
4. Bibliographies (in all your oral citations you must typically include the type of document, the author, the date published, and the author's qualifications).
Finally, when you orally cite a source and quote your source in a speech, you should use your tone of voice or slight pauses to indicate when you are giving quoted material and vary the way you cite your sources, blending the information into your speech.
Good luck!
