How would you go about answering the following? Using chi-squared and goodness of fit?

C1. Examine the graphs shown below. Each has the same data with a different linear fit. The bars represent uncertainties. 40 40 30 20 8 8' 10 LO O 0 0 5 10 15 20 0 5 10 15 20 40 40 30 30 20 20 10 LO 0 0 0 5 10. . 15 20 0 5 10. 15 20 Which of these would you select as the best fit line? Why