Grades on a political science test and the number of hours of paid work in the week before the test were recorded. The instructor was trying to predict the grade on a test from the hours of work. The figure shows a scatterplot and the regression line for these data. Predicted Test = 86.55 - 0.4817 Work 100- 90 Test Grade 80 70 60 10 20 30 Work Hours What is the predicted grade on the test when he/she works 55 hours per week? Choose the most reasonable answer. a. 60.06 b. 71.23 c. 55.24 O d. We cannot predict the grade based on the given linear model because it is considered as an extrapolation. Clear my choice