All of the following are true except
(a) trade between two nations reduces their opportunity costs.
(b) trade makes nations dependent on each other.
(c) trade between nations will not benefit all citizens.
(d) the principle of comparative advantage does not apply to countries with extremely limited resources.

(D) the principle of comparative advantage does not apply to countries with extremely limited resources.

Explanation:

The statement a, b and c are trues, the cost of opportunity reduced because you have more products available, it reduces the price of different prices and services, the trade makes that the nations depend and work together to improve their benefits, usually the trade doesn't benefits all the citizens because some industries improve their performance an other don't it depends of the market.

All the resources al limited, but the principle of the comparative advantage, says that the countries have to put the resources and efforts in a specific economic activities where they are better that other countries, and there are many products that a country could make