CAIE-Alevel-经济学-A2分类练习+解析

Which of the following would serve as an indication of productive inefficiency within an economy?

In a perfectly competitive market, what condition would guarantee both productive and allocative efficiency for a firm?

Alice and Bob, the only inhabitants of a remote island, have access to a limited amount of goods represented by the line HV in the diagram. The line OE shows points of equal distribution of these goods. Which point, compared to the initial point 'Initial', would lead to an enhancement in economic welfare according to the Pareto Efficiency Criterion?