C. The speaker can continually change an opinion during a speech.
Explanation:
Speeches, for sure allows for more interaction between the speaker and the audience be it live or any speech. But as far as the advantage of live speech is concerned, it enriches the speaker with liberty to alter his opinions, inferences, illustrations continually as per the response of the audience. Live speech is the true examination of a speaker as it tests their intellect, wit and decision-making skills. A successful live speech boosts the confidence of the speaker contrary to the depression led by a failure of live speech.
