To what specific address in memory is the primary access initiated during an operation?

Primary access during a memory operation is initiated at the address pointed to by a pointer or variable used in the operation. For example, if you have a pointer int *p, then the operation *p = 5; initiates access to the memory at the address stored in p. In general, this is a specific address in the virtual memory of the process, corresponding to the variable or object the program is working with.