Which statement about the Qur an is true? A. It is a collection of Muhammad's prophecies
B. It written in both Arabic and Hebrew
C. It was complied after Muhammad's death.
D. It was a book the Muslims follow only during specific religious events.

I think it’s C. Let me know if it’s correct!

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.

That is true , instead try to have a sit down talk with them