Answer:
The last option is the correct answer. EDX will equal 40 on line 6
Step-by-step explanation:
An element is pushed into stack at line no. 04 and call instruction at line no. 05 pushes a return address.
The return addrees is the instruction address followed by call function.In this scenario it is the address of line 6.
Now, the subroutine pops the return address from the stack,i,e. it pops 40 from the stack into edx and then puts the return address back in the stack, and returns.
Therefore, edx contains the value 40 when it returns from subroutine,