Which of the following always occurs during a period of rapid industrialization

this question does't support enough resioning to answer.

what he said above me         look up that's the answer

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.