Answer:
Opportunity cost refers to loss arising out of a foregone option when another option or alternative is chosen.
Following would constitute the opportunity cost:
1. A Higher Income
This represents the scenario if the same student would've been working instead of being a student at home. This means the articles the student could've purchased in such a scenario with a higher income.
2 Expenditure On tuition
This is a specific cost related to being a student and would not have arose had the student been working or doing something else.
3. A Subscription to the Rolling Stones Magazine
If such a subscription directly relates to study and is essential then it represents opportunity cost otherwise not.
4. The Income student earns after graduating does not relate to the current period and hence will not constitute opportunity cost.