D) gives examples to support the main idea.
The middle part of a speech is often called the "body" and it contains the main points, arguments, and evidence that support the speaker's main idea or thesis statement. The middle of a speech is where the speaker provides detailed information, examples, and evidence to convince the audience of the importance or validity of the message being conveyed. The beginning and ending of a speech typically contain the attention-getting statement and conclusion, respectively, while the middle is where the bulk of the content is presented.