Answer:
D. rightward shift of the production possibilities curve.
Explanation:
Production possibility curve shows all the two combinations of goods that can be produced in an economy given its resources and technology.
Shift of the possibility possibility curve to the right shows that technological progress has occurred. This shows economic growth.
When production is taking place at a point within the curve, production is inefficient. A point outside the production possibilities curve is unattainable. Movement from a point inside to a point outside the production possibilities curve shows that the economy is moving from inefficency to an unattainable production point.
Movement from a point near the vertical axis to a point near the horizontal axis on the production possibilities curve means more of a product is been produced and less of another product is been produced.
I hope my answer helps you.