How Were the Ottomans Able to Administer Their Diverse Peoples

How were the Ottomans able to administer their diverse peoples with a minimum of resistance?

A) They never allowed local or communal-level religious systems to emerge within the Ottoman Empire
B) They strongly restricted religious freedom for non-Muslim subjects
C) They permitted non-Muslim subjects to retain their religious laws, education systems, and communal leadership
D) They threatened to implement harsh economic sanctions on entire groups, thus acquiring the begrudging support of those groups