Please help me determine what the blanks are

answer; ///i believe that it means; ///you pay no customs duty on the chocolates;

i would say b. research typically uses a variety of sources

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.

answer; basic psychology;