Which of the following best defines extemporaneous speech?

Extemporaneous speech is characterized by being prepared in advance while allowing for a degree of spontaneity during delivery. This type of speech is often structured and organized, but it relies on notes that serve as cues rather than a complete script. This facilitates a natural and conversational manner of speaking, enabling the speaker to engage more effectively with the audience, adapt to their reactions, and incorporate relevant examples or anecdotes at the moment.

In contrast, casual, off-the-cuff speaking lacks the preparation that defines extemporaneous speech, resulting in a more informal and potentially less coherent presentation. A highly rehearsed and scripted speech does not allow for the natural flow and adaptability that extemporaneous speeches maintain, as it limits the speaker's ability to respond to the audience dynamically. Lastly, relying exclusively on visual aids does not align with the extemporaneous style, which emphasizes the speaker's verbal communication skills alongside limited note usage. Therefore, the option that best defines extemporaneous speech focuses on its prepared nature while still permitting a natural and engaging delivery using notes as guides.