To complete the model of international trade using the PPF, we must also use the idea of indifference curves. One of these curves represent: * a set of alternate quantities of both goods (sloped negatively), whereby consumers are equally satisfied in their level of utility gained. a fixed quantity of one good (such as wheat) and a varying amount of the other good. consumers who are indifferent to everything. producers who do not care which production method is chosen.

The answer is "The first choice".

Explanation:

In this model the international exchange, its limitation of output, commonly called PPF, that is just a sequence with products in which the customers want a degree of power is derived from of the set and in other terms indifference from the whole category of products, which is why the set of alternate amounts from both goods (negative slopes) satisfy customers equally.

answerstakeholders;

answer/// sequence of operations that requires the longest time for completion';