Hello I Am Currently Taking A Chemistry Course And One Of My Homework Questions

Hello! I am currently taking a chemistry course and one of my homework questions is “Scenario: You are in in the lab, and just created the graph for Data Table 1 (Spectrophotometric Data for KMnO4). After looking at the data, for which concentration of solution would you repeat the absorbance measurement if enough time was left in lab? Why?” However, I am not entirely sure how to answer this question with a graph as well