When doing research, economists a. follow the scientific method: observation, theory, and more observation b. cannot use experiments, as they are often done in areas like physics and chemistry. c. have to use whatever data the world happens to give them d. all of the above

d. All of the above

Explanation:

Based on the information provided within the question when doing research all of the answers provided are correct. Any field doing research should follow the scientific method, but Economists cannot use the same experiments as other fields because they have to use the data that the world happens to give them and do not have the ability to make control groups and test different variables on the economy like experiments in the field of Physics and Chemistry can.

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answer; someone must cover the cost associated with the provision of scarce goods in both sectors;

answerreactive approach;