From the responses provided, the most likely conclusion is that Ms. Balch’s class needs the tutoring because the class data is skewed right, and her class median is lower.
A right-skewed distribution indicates that there are some high scores that are pulling the mean up, but most of the scores are lower. A lower median also suggests that the majority of the students did not perform well, meaning they may need additional tutoring to improve their understanding of the material.
In contrast, if Mr. Hanley's class had a skewed left distribution, that would typically indicate that more students scored higher, suggesting they may not need as much help. Thus, the correct reasoning points to Ms. Balch’s class as needing the extra tutoring.