Which of the following is a key element of a persuasive speech?

A clear thesis is an essential element of a persuasive speech as it serves as the foundation for the speaker’s argument. The thesis articulates the main point or position that the speaker is advocating for, guiding both the speaker in structuring the content and the audience in understanding the message being conveyed. A well-defined thesis helps to clarify the purpose of the speech and focuses the audience's attention on the specific argument or stance being presented.

While humor can enhance a speech and anecdotes can make it more relatable, they are not fundamental components necessary for persuasion. Vagueness, on the other hand, undermines the effectiveness of a persuasive argument by leaving the audience unclear about the key points. Thus, a coherent and concise thesis is vital for establishing credibility and ensuring that the message resonates with the audience.