The best answer is "b. in the beginning of the speech." For political speeches, it is generally recommended to clearly state the main message or thesis early on in the speech. This helps to establish the purpose and focus of the speech from the outset, allowing the audience to understand the key points and arguments that will be presented. By stating the main message at the beginning, the speaker can effectively engage the audience and set the tone for the rest of the speech, ensuring that the audience is aware of the central theme or idea being conveyed.