D - It intensities the conflict.
Any time there is a complication in a story, the pupose is to intensify the conflict. Exposition delivers necessary information (example: the setting), and a conflict does not resolve (end) a story nor introduce a theme.
I think 3. Is B. I think 4. Is F and lastly I think 5. Is A
Answer:
The times gone past; the good old days. as taken from ask.com 's dictionary. perhaps also "for old time's sake" (for the sake of Auld Lang Syne)
