Explain how an economy can operate beyond its institutional production possibility frontier but not.....?

Question

.....its physical production possibility frontier?

Answer 1

That's' because institutional possibilities curve is only part of whole production possibility frontier.

Production possibility frontier is actually sum of many sectors of economy - so internal redistribution of resources are possible to extend institutional production out from it's frontier but by the cost of another economy sectors - so total effect remains unchanged (increase in one production is offset by decline in another sector).