What type of speech aims primarily at convincing the audience to adopt a particular viewpoint?

The type of speech that aims primarily at convincing the audience to adopt a particular viewpoint is persuasive speech. This form of communication is designed to influence the beliefs, attitudes, or behaviors of the audience. A persuasive speech typically includes the speaker's opinion or stance on an issue and uses various rhetorical techniques, such as emotional appeals, logical reasoning, and credibility, to engage and persuade the audience.

In contrast to persuasive speeches, descriptive speeches focus on detailing and painting a picture of a subject without necessarily trying to change opinions. Informative speeches aim to educate the audience about a particular topic, providing them with knowledge and facts, rather than encouraging them to take a specific action or adopt a viewpoint. Demonstrative speeches are similar to informative ones but primarily focus on showing the audience how to do something through step-by-step instructions or demonstrations. Each of these other types of speeches has different purposes but lacks the direct aim of persuasion that characterizes a persuasive speech.