The PPC (or PPF, same thing) shows economic growth because it outlines exactly what the economy can produce at that moment. When it shifts outward in any way (be it towards consumer and capital goods, or X and Y), that MUST be because of economic growth.
Answer:
what is your question?
If you help me understand what you need I can help you
Answer:
I feel like the Answer is a
I need the rest of the question this is a statement
