To determine the lowest score among the students who completed their homework based on the box plot, we need to look at the bottom box plot labeled "Homework." The lowest score in a box plot can typically be found at the leftmost point of the whisker (the line extending from the box).
Unfortunately, without the visual of the box plot, I cannot see the actual values. However, if you have the numerical value displayed on the leftmost end of the "Homework" box plot, that will indicate the lowest score among students who completed their homework.
If you need to choose a response from the options you provided, please refer to the lowest point on the "Homework" box plot and select the corresponding answer.