If a student decides to spend their summer working at a part-time job instead of taking a summer course, what is the opportunity cost of this decision?

Opportunity cost is what you give up when you make a choice. In this case, if a student decides to work a part-time job during the summer instead of taking a summer course, the opportunity cost is the benefits they would have gained from that course. This could include learning new skills, earning credits for school, or even meeting new people. For example, if the course could help the student get a better job in the future, they are giving up that potential advantage by not taking it. So, the opportunity cost is the valuable experience and opportunities that come from the summer course.