The option that contains another word for the main idea of a speech is message, as found in option B.
The main idea or message of a speech
The main idea of a speech can also be called the message of the speech. In other words, it refers to the idea, fact, or opinion that speaker wishes to convey to the audience.
To find the message or main idea of a speech, all we need to do is ask ourselves how we could summarize that speech in just a few sentences. That summary will contain only the most important parts of the speech, which will certainly include the message.
With the information above in mind, we can choose option B, message, as the option that contains another word for main idea.
Learn more about main ideas here:
https://brainly.com/question/17610102
