C., the setting of a story provides the atmosphere and mood of a story
Umm you can either sue them when you wake up or tell them thanks
Answer: The journal of someone who was there at the time.
Explanation: The journal of a person who was present at the fall of the Berlin wall would be a perfect source, or footage of the event, or anything first-person. People who were actually there and participated are always the best sources for any historical event. (:
I'm not sure since I can't read the passage, but I think D is least important.
