Final answer:
All listed points need to be done by informative speakers for an effective informative speech, which includes a clear thesis statement, audience connection, motivation, and credibility.
Step-by-step explanation:
Informative speakers should provide a clear thesis statement, connect with listeners' values and experiences, motivate listeners to want information, and build credibility with listeners. Therefore, the correct answer is e. All of these need to be done by informative speakers. A successful informative speech not only provides facts and data but also engages the audience by relating to their interests and prior knowledge.
By establishing a clear thesis and demonstrating authority on the subject, an informative speaker enhances their credibility, ensuring that the audience understands the importance of the information being presented. Additionally, using elements like anecdotes, humor, or surprising facts can help to engage the audience and make the information more memorable.