Answer:
A. a nation's production possibilities frontier represents economic growth
Explanation:
A production possibilities frontier shows the idea that in a given economy, factors of production such as land and capital are scarce.
When there is an OUTWARD SHIFT in the PPF curve, it shows that there's increase in factors of production, meaning the economy is able to produce more goods which invariably represents economic growth.
When there's an INWARD SHIFT in the PPF, it means there's low amount in the factors of production which will lead to decrease in the amount of goods produced.
