To find the range of a dataset, you subtract the smallest value from the largest value. Since I can't see the image of the dot plot, I suggest that you identify the smallest and largest values in the plot and then calculate the range by using the formula:
Range = Largest value - Smallest value.
If you have the smallest and largest values, you can easily calculate the range. Based on the options you provided, if you determine these values, you can see which of the answers (9, 6, 8, or 11) corresponds to your calculated range. If you give me the smallest and largest values from your data, I can help calculate the range for you!