Answer:
The correct answer is the benefit from the best foregone alternative.
Explanation:
The opportunity cost of an economic decision is the cost of giving up its second-best alternative. In other words, the benefits that could have been earned if the alternative was not foregone.
The resources in an economy are fixed or scarce. We need to use these scarce resources to satisfy unlimited wants and needs. So to spend resources on one thing we need to sacrifice its alternative.