The answer is
B) it was written in the middle of the 18th Century
Back then , the city was shocked by smallpox epidemic. Since smallpox is easily transmitted by contact, overcrowded areas are the perfect breeding spot for smallpox ( they still has not developed small pox vaccine back then)
Um... do you have a link? to this question, because I don't see anything.
1. False
2. True
3. False
4. False
5. True
6. False
7. False
8. True
9. True