QUESTION 10 Park and Burgess' Concentric Zone Model proposes which of the following: O That cities are destined to fail as a result of their diversity and other externalities A process of displacement and succession of racial and ethnic groups from their neighborhoods O That cities are polycentric, containing multiple downtown areas of different sizes and functions O An early model of gentrification by which poor residents are displaced from their neighborhoods OA series of natural relationships which should be relatively universal within industrial cities