Comparative advantage. It is being able to produce goods by using fewer resources, at a lower opportunity cost, that gives countries a comparative advantage. The gradient of a PPF reflects the opportunity cost of production. Increasing the production of one good means that less of another can be produced.
Answer:
2, it's the best option out of all of them. If I had a choice though I would say 8 is the best.
"New factories in the U.S. offer higher
<span> wages for unskilled workers" is the best answer. Although these wages are still relatively low, they're higher than many immigrants would see back home. </span>
A. Although they were immortal, they had many characteristics of humans.