D. Why should we produce the goods and services? is NOT one of the three economic questions that all countries have to deal with.
The three economic questions that all countries have to deal with are:
A. What and how much should be produced?
B. How goods and services should be produced?
C. Who gets the goods and services that are produced?
These three questions form the basis of an economic system, and each country has to decide how to answer them based on its available resources, technology, and social preferences. The economic system of a country can be characterized based on how it answers these three questions.
~~~Harsha~~~