What is the primary characteristic of extemporaneous speech?

The primary characteristic of extemporaneous speech is that it involves a clear outline but allows for adaptability. This style of speaking is distinctive because it combines preparation with a level of spontaneity. When preparing an extemporaneous speech, the speaker outlines the main points and organizes their thoughts in advance, but does not memorize the entire speech verbatim. This approach provides the speaker the flexibility to adjust their delivery based on the audience's reactions or the flow of the discussion, leading to a more engaging and dynamic presentation.

The benefit of extemporaneous speech lies in its conversational tone; it feels more natural and relatable compared to strictly memorized or written speeches. This adaptability enables speakers to respond to questions or comments during their presentation, enhancing audience interaction and engagement.

In contrast, the other options describe different types of speech delivery. Delivering exactly as written implies a manuscript style, which lacks the spontaneity and personal touch inherent in extemporaneous speeches. An entirely spontaneous speech suggests no preparation or structure, which can lead to disorganization and lack of clarity. Committing a speech to memory means reciting it without the use of notes, which again removes the flexibility that characterizes extemporaneous speaking.