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
sentence that contains a collective noun is letter D: The legislature met in
secret session.
<span>Nouns
are names of a person, animal, place, event, etc. It could be proper or common
noun. Common nouns are names of general items and you find them everywhere you
go. These words are not usually capitalized, except if it is the starting word
in a sentence. Proper nouns on the other hand are more specific names and they
are capitalized. Collective nouns are nouns denoting quantity.</span>
C) summarizing explains all of the main ideas in a source while paraphrasing focuses on just a few sentences