Answer:
B. The trade-off of making one choice and giving up a different choice.
Step-by-step explanation:
Opportunity cost is the worth of the option forgone. It is also called the alternative forgone or real cost. It is a concept that arises as a result of the unlimited wants that cannot be satisfied with the limited resources available.
For example, a man who has $1 million dollars can but a home for $900,000 which makes it impossible for him to buy a car of $500,000 because he has just $1 million. The cost of the car that was not purchased is the opportunity cost in this.
Hence the right option is B. The trade-off of making one choice and giving up a different choice.