Which of the following is TRUE according to the passage?

Old neighbourhoods were improved and replaced by large modern buildings that strengthened community interaction and support.

Urban residents often adopt impersonal behaviours that contribute to greater psychological pressure and decreased social isolation.

The more affluent move out of inner-city areas, leaving poorer groups confined to places where economic activity has shifted to the suburbs.

There might be little or no significant correlation between the scale of a community and the scope of criminal activity within it.