Final answer:
The three economic questions that all economic systems must answer are what should be produced, how should it be produced, and for whom should it be produced.
Step-by-step explanation:
The subject of this question is Social Studies. Social Studies is a discipline that explores various aspects of human society and how people interact with one another. It focuses on topics such as history, geography, economics, and government.
In terms of the grade level, this question is suitable for High School students. The concepts of economics and economic systems are often introduced and discussed at this level.
The three economic questions that all economic systems must answer are:
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