Questions Refer to the Passage Below

Questions refer to the passage below.
[The Caliph] built . . . a hospital consisting of blocks of houses and hospices for the sick poor who come to be healed. Here there are about sixty physicians' stores which are provided from the Caliph's house with drugs and whatever else may be required. Every sick man who comes is maintained at the Caliph's expense and is medically treated. . . . Money is given to those that have stayed in the hospices on their return to their homes. . . . All this the Caliph does out of charity to those that come to the city of Bagdad, whether they be sick or insane. The Caliph is a righteous man, and all his actions are for good.
A depiction of Baghdad by Benjamin of Tudela,* a Jewish traveler who visited many Jewish and other communities in Europe and the Middle East, circa 1165
*A city in Navarre, the northern Iberian Peninsula
-According to the author, which of the following was a function of the Caliph's rule?

A) Expanding the borders of the Islamic world
B) Ensuring equality between different ethnic and religious groups
C) Providing health care and medical centers
D) Imprisoning criminals and administering justice