Because it's the way of the road.
A. Food. They fave out food surpluses that helped to lead to population growth and trade.
Answer would be A or D, the answer choices are dumb
Answer:Making Economic Decisions
Individuals are forced to make trade-offs every time they use their resources in one way and not in another. The cost of making a trade-off is known as opportunity cost—the value of the next best alternative that has to be given up to do the action that is chosen.
Explanation: