Aflashing yellow light at an intersection means

a. stop and yield to vehicles that arrived first and vehicles to your right
b. slow down and yield to cross traffic before proceeding with caution
c. stop before entering the intersection unless you cannot do so safely
d. stop only if there is already a vehicle stopped at the intersection

A is the correct answer it functions as a stop sign basically

A is the answer to what you should do at a flashing yellow light

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.

Not true it depends on the person