Although nicole scored well above average on an academic aptitude test, she frequently loses her temper and needlessly antagonizes even her best friends. her behavior best illustrates a low level of

Ithink the answer is baby boomers ?

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.