Which of the following is a principle concerning how people interact?
A)Markets are usually a good way to organize economic activity.
B)Rational people think at the margin.
C)People respond to incentives.
D)All of the above are correct.

Question

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The Answer of Which of the following is a principle concerning how people interact?
A)Markets are usually a good way to organize economic activity.
B)Rational people think at the margin.
C)People respond to incentives.
D)All of the above are correct.

Which of the Following Is a Principle Concerning How People