public class Test public static void main(String [] args) int x = 0; // insert code here do while(x++ < y); System.out.println(x); Which option, inserted at line 4, produces the output 12?

Answer: Option C

x reaches the value of 11, at which point the while test fails.
x is then incremented (after the comparison test!), and the println() method runs.
Hence, choice A, B, D, E, and F are incorrect based on the above point.