What is Ibn Rushd best known for? 1.He wrote about the nature of life and the natural world.
2.He introduced Sufism as the best way to practice Islam.
3.He believed that Islam might be understood through the study of philosophy.
4.He was a mathematician and a poet who wrote about human experiences.

I believe it is option 3 He believed that Islam might be understood through the study of philosophy.

Explanation:

corrupt also means cruel

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.