Final answer:
The authors suggest that a speaker should plan their outline, including both an introduction and conclusion, in the first step of the process.
Step-by-step explanation:
The authors suggest that a speaker should plan their outline, including both an introduction and conclusion, in the first step of the process. Planning the outline helps organize the main ideas, key points, and supporting details that will be discussed in the presentation. It also provides a framework for creating a natural flow and engaging the audience.