What does the term fourth estate refer to? question 6 options: congress the press the public the upper class

The answer is the press.The most commonly recognized part of the fourth estate is the news media, or press. The term fourth estate derives from traditional European concept of the three estates of the realm: the clergy, the nobility, and the commoners.

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.