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Which of the following best describes the organization of the passage?
A.
A problem is described, and then reasons why various proposed solutions succeeded or failed are discussed.
B.
A problem is described, and then an advantage of resolving it is offered.
C.
A problem is described, and then reasons for its continuing existence are summarized.
D.
The historical origins of a problem are described, and then various measures that have successfully resolved it are discussed.
E.
The causes of a problem are described, and then its effects are discussed.