An address in main memory is called:

Explanation

An address that refers to an actual location in main (physical) memory, after any translation from a program-generated address, is called a physical address. A virtual/logical address, by contrast, is the address generated by the CPU during program execution, before the memory management unit (MMU) translates it; these are the addresses a process 'sees', not the real hardware location. 'Memory address' is too generic a term used loosely for either kind, so it is not the precise technical answer being tested here. Hence option (iv) Physical address is correct.