In which rung in the cyclical pattern of cities did the problems of industrialization become most obvious?

A. the core

B. the second rung

C. the business district

D. the furthest rung

The correct answer for the question that is being presented above is this one: "A. the core." In the core rung in the cyclical pattern of cities did the problems of industrialization become most obvious. It is where the center and the problems of industrialization became obvious.