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.)
The answer is C. What can you tell me about your family? The open question is a question that can't be replied with a yes or no, however, requires a created reply. On the off chance that something is an open question, individuals have diverse conclusions about it and no one can state which supposition is right.
German is the word that should be capitalized.
I suppose that the assumption that the narrator is making is that the boy is actually not sick he is lying about it to his mother.