The part of the operating system that manages (part of the memory
hierarchy is called the
a.)memory disk
b.)memory space
c.)memory manager
d.)address table

C.

Explanation:

Memory Management can be defined as a management process in computer science which helps in managing and controlling computer memory. This process also allocates blocks to several programs running in order to improve overall system. Memory management is located  in hardware, OS, and applications.

This program also assits OS by providing additional assisstance such as it helps to remove unused data of memory, etc. Some examples of memory manager are cacheman, WinRam, etc.

Therefore, option C is correct.

the answer would be d. online forums.

hope it