Which type of speech is designed primarily to inform or educate the audience?

The type of speech primarily designed to inform or educate the audience is the informative speech. This kind of speech focuses on conveying knowledge or information about a specific topic, aiming to enhance the listeners' understanding of that subject. Informative speeches often include clear explanations, definitions, and details that help the audience learn something new or gain insights into a particular issue or concept.

In contrast, persuasive speeches aim to convince the audience to adopt a certain viewpoint or take action, which is not the primary goal of an informative speech. Special occasion speeches are typically delivered at events such as weddings or commemorations, focusing more on celebrating or honoring something rather than purely educating. Impromptu speeches are delivered on the spot, often without preparation, making them less structured for informative purposes. Each of these other types serves distinct functions, but the primary goal of an informative speech is to educate the audience effectively.