Correct Answer: 18712

Solution : If the last three digits of a number are divisible by 8, then the number is divisible by 8.
Option 1: 18718. 718 cannot be divided by 8.
Option 2: 18716. 716 cannot be divided by 8.
Option 3: 18712. 712 is divisible by 8. Therefore, 18712 is also divisible by 8.
Option 4: 18714. 714 cannot be divided by 8.
Hence, the correct answer is 18712.