Answer:
E) We cannot determine what the opportunity cost is without knowing which alternative, working or studying, you would have preferred.
Explanation:
Opportunity cost also known as the alternative forgone, can be defined as the value, profit or benefits given up by an individual or organization in order to choose or acquire something deemed significant at the time.
Simply stated, it is the cost of not enjoying the benefits, profits or value associated with the alternative forgone or best alternative choice available.
Hence, to determine the opportunity cost of something such as a trip, the best alternative forgone must be defined or known.
Therefore, in this context we cannot determine what the opportunity cost is without knowing which alternative, working or studying, you would have preferred.
For instance, if you decide to invest resources such as money in a food business (restaurant), your opportunity cost would be the profits you could have earned if you had invest the same amount of resources in a salon business or any other business as the case may be.