Correct Answer - Option 1 : 16
To access a memory of 2n RAM i.e. to address 2n memory locations, the address line required are n.
Given that a microprocessor is designed to access 2 k ROM, 4 k PROM and 64 k RAM.
Maximum memory is 64 k RAM.
To address 64 k RAM i.e. 26
memory locations, the address lines required are 16.