3.482×10^9
Imagine the decimal at the end of the last 0 and move it 9 places to the left
Answer: 7
Of all the numbers listed, the number 7 is the greatest. If you are asking for the farthest from sea level, it is 7 because of the fact that it is the greatest number.
The answer is 7. Hope this helps!
Looks good! (In my opinion)