which term properly describes a scenario in which the national government hires us airlines to fly troops to a conflict abroad

answer; i believe the correct answer is (a) the correlation between the cause variable and outcome variable is zero;

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; /// working class;