What type of speech aims to persuade the audience to accept a debatable viewpoint?

The type of speech that aims to persuade the audience to accept a debatable viewpoint is an argumentative speech. This form of communication is characterized by the speaker's effort to present a specific stance on a particular issue, systematically addressing various arguments and counterarguments related to that viewpoint. Unlike informative speeches, which simply present facts without aiming to influence opinions, or extemporaneous speeches, which are often delivered in a spontaneous manner yet may not have a definitive persuasive element, argumentative speeches are designed to engage the audience’s reasoning and encourage them to adopt the speaker’s perspective.

In an argumentative speech, the speaker typically uses evidence, logical reasoning, and rhetorical devices to bolster their claims, making it a critical tool for discussions on controversial topics. By fostering a debate and inviting the audience to consider the merits of their argument, the speaker seeks to convince the audience of the validity of their position.