To find the mode of a data set you'd have to observe the data set and then see which number occurs the most in the set. Now I could just let you see that on your own, but I'll provide a chart for you. I hope everything is 100% clear and properly labeled for you.
<em>PLEASE VIEW THE IMAGE PROVIDED</em>
Looking at the chart, you can see that the number 10 occurred 4 times and the other numbers occurred less than 2 times.
<em>The mode of the number of Dominique's donuts in her bag is</em> 10.