To calculate the circumference of a circle, you can use the formula:
\[ C = \pi \times d \]
where \( C \) is the circumference and \( d \) is the diameter. Given that the diameter \( d \) is 4.5 miles and using \( \pi \approx 3.14 \):
\[ C = 3.14 \times 4.5 \]
Now, perform the multiplication:
\[ C = 3.14 \times 4.5 = 14.07 \]
Now round it to the hundredths place:
\[ C \approx 14.07 \]
Therefore, the closest response from the options you provided is 14.2 miles.