(Solved): The following table shows the grades/scores that a student can earn on an upcoming exam in Microecon ...

The following table shows the grades/scores that a student can earn on an upcoming exam in Microeconomics, as a function of the amount of time spent studying (measured in hours). \table[[\table[[Hours Spend],[Studying]],Expected Grade (or Score)],[0,40],[2,60],[4,76],[6,88],[8,96],[10,100]] Based on this information, what is the opportunity cost, if the student wishes to improve her grade/score in Economics from 60 to 88 ? a. 8 hours b. 6 hours c. 4 hours d. 2 hours