Hello!
We know that the diameter is about 8 and 3/5 inches. We can also write it as 8.6 inches.
Below, let's draw the line going from -9 to +9, look:
As we know that point 8 3/5 can be written as 8.6, the best alternative is point D (because it's a value between 8 and 9).
Answer: D.