Which of the following correctly defines opportunity cost?

1. A Option A: The cost incurred in the past before we make a decision about what to do in the future
2. B Option B: That which we forgo, or give up, when we make a choice or a decision
3. C Option C: The additional benefit of buying an additional unit of a product
4. D Option D: A cost that cannot be avoided, regardless of what is done in the future

Answer checked 11 October 2026 · How we write and check questions