Which of the Following Is Viewed as a Fundamental Building

Multiple Choice

Which of the following is viewed as a fundamental building block of the U.S. economic way of thinking?

A) the principle of setting high toxic emission limits to preserve a healthy environment
B) the belief that industry must be allowed to prevail over the environment
C) the needs of both parties to a voluntary exchange must be completely satisfied
D) the principle that a system of voluntary exchange benefits both parties