Beautiful-ugly funny-sad woman-man small-big build- destroy son-daughter
Unacceptable animal who is not domesticated
A - Not a knocker but Marley's face
This shows that the knocker transformed to the supernatural by becoming not what it was - but the face of his dead co-worker.
A) The urbanization of the United Stats quickened due to technology improvements.
-This whole paragraph is on the subject of how technology quickly urbanized the United States. All of the other answers are factors that caused this to happen.
Hope this helps!