Which of the following best expresses the authors main point?
A.
Americans' pride in their jobs continues to give them stamina today.
B.
The absence of a status quo ante has undermined United States economic structure.
C.
The free enterprise system has been only a useless concept in the United States.
D.
The myth of the American free enterprise system is seriously flawed.
E.
Fascination with the ideal of 'openness' has made Americans a progressive people.