Final answer:
True, as a speaker's inability to explain their speech's organization can indicate a lack of mastery over the subject and inadequate preparation for public persuasion.
Step-by-step explanation:
According to the textbook, if you are unable to answer a question from your audience about how you organized your speech, this suggests you are not living up to the requirements of public persuasion. This statement is True. As a public speaker, part of your responsibility is to develop an outline that will provide a structure for your speech, ensuring that it flows logically and that your message is delivered clearly.
Furthermore, being able to discuss and justify your organizational choices will demonstrate your competence and confidence in the subject matter, which are critical components of effective public persuasion. The ability to communicate why you have organized your speech in a particular way reflects your understanding of rhetorical strategies and shows that you have considered how best to convey your message to your audience.