Answer:
Forgettable. How's yours?
Explanation:
Tone is the author's attitude toward the speech. Since we know that Dr. King was the author and presenter of the speech, this was one of inspiration, seriousness, hope, and encouraging. This is not to be confused with mood. Mood is your feelings from the text. So, while the tone may be one of hope, to say it was 'hopeful' would be a mood (if that is indeed what you are feeling when hearing it.)
1. Brian, you need to work hard if you want to keep this job.
2. The old man, spent his days looking out the window, and his nights, sleeping.
3. "If you aren't willing to help", my sister said, "then please wait in the other room."
Advised
behaving as someone, especially the speaker, would recommend; sensible; wise.