What is an impromptu speech?

An impromptu speech is defined as a speech that is delivered without prior preparation or planning. This type of speech requires the speaker to think on their feet and articulate their thoughts spontaneously in response to a prompt or situation. The ability to deliver an impromptu speech effectively often relies on the speaker's knowledge of the topic, quick thinking, and ability to structure their ideas coherently in real-time. This form of speech can occur in various settings, such as classroom discussions, meetings, or public speaking events, where the speaker may be called upon unexpectedly to share their insights.

The other options describe different types of speeches or speaking situations that involve preparation, structured notes, or specific focuses, which do not align with the essence of an impromptu speech.