Answer:
The opportunity cost of John's decision is the benefit that he could have derived from the:
New pair of jeans,
which he did not choose to buy.
Step-by-step explanation:
In this scenario, John is faced with two alternative decisions. By choosing to spend his limited financial resource, $40, on the amusement park, the forgone benefit that would have been derived by choosing a new pair of jeans is lost by the cost of visiting the amusement park. The concept of opportunity cost helps in clarifying economic decisions among alternative courses of action, enabling the decision-maker to reach a favorable decision.