Question

The only way that a society can produce outside the production possibilities curve is

Answer 1

and i copy and pasted:sorry if its wrong

sorry if its wrong:

Outward or inward shifts in the PPF can be driven by changes in the total amount of available production factors or by advancements in technology. If the total amount of production factors like labor or capital increases, then the economy is able to produce more goods at any point along the frontier.

Answer 2

The answer is d.
If you produce efficiently (in other words, producing goods with appropriate labour force since a good labour force consists of appropriate knowledge of a certain field of that product and appropriate number of labour.) a society can produce outside the production possibilities curve.