A. to use primary memory efficently
B. to do intra process communication
C. to do inter process communication
D. None of above

Solution

C. to do inter process communication

Explanation

<p><span style="font-size: 14px;">The main function of shared memory is to provide a mechanism for <b><u>inter-process communication (IPC)</u></b>, allowing multiple processes to share data and communicate with each other more efficiently. Shared memory is a method by which several processes can access common data structures, variables, or segments of memory.</span><br></p>