Answer:
C, v45
Explanation:
First, we can use process of elimination to get rid of A and D, since we know we're looking for a range, and only the highest or the lowest number is going to be outside of that range.
Now we simply have to run the remaining answers through our calculators. v62 is 7.87 and v45 is 6.71. Since 7.87 is between 7 and 8 and 6.71 is not, C must be your answer.