Answer:
The correct answer is letter "C": Interrelated because what happens in the economy as a whole is based on individual decisions.
Step-by-step explanation:
The economic field is often divided into two categories: microeconomics and macroeconomics. Microeconomics studies finite resource production and use from an individual or business perspective. Macroeconomics discusses the problems from the context of the nation as a whole, and the policies that affect the individuals and the overall economy.
Thus, both micro and macroeconomics are related since they study what is going on in the overall economy based on the decision taken by individuals.