The correct answer is D. a combination of two goods that can be produced using limited resources.
Explanation:
The production possibilities curve, also known as PPC, represents the maximum units a company can produce if it produces only two products using its resources efficiently. This representations are used by companies to decide the number of units it can produce in order to maximize profits and reduce the cots of production.
The answer is A because the significance of gunboat diplomacy is military threats which is a foreign policy used to scare the less powerful nation so that they follow the most powerful nations demands.