Question: What would be the best philosophical statement about grades based on your professor's lectures? a. Grades are important because they are the primary tools professors use to motivate and control students. b. Grades are not important because they are the primary tool for school and education is a waste of time. c. Grades are not important because they are momentary marks in time and really do not show what a student learned or did not learn. d. Grades are important because they tell us fundamental truth about a student's identity.