Final answer:
Narrowing the scope of a speech involves determining main points, organizing them strategically, and clarifying the purpose and thesis of the speech.
Step-by-step explanation:
Narrowing the scope of a speech involves determining your main points and organizing them strategically, as well as creating an outline and detailing subpoints. It also involves clarifying the specific purpose of your speech and crystallizing its thesis. By narrowing the scope, you ensure that your speech is focused and effectively conveys your message to the audience.