i dont understand how these fools craft these questions , and whatever absurdity they stuff in the name of reasoning

No resident of Country X should consider the loss of the traditional tribal structure to be a tragedy. When tribal traditions dominated the culture of Country X, the economy was extremely depressed. However, since the loss of the tribal tradition, Country X has experienced the fastest growth of any economy on the continent. Per capita income has increased more than twentyfold, the trade deficit has become a trade surplus, and the unemployment rate is at an all-time low.

paraphrase: Is it just the tribal structure,the loss of which has resulted in Economic Revival ?

Which of the following questions, if answered, would be most helpful in evaluating the validity of the argument above?
(A) How long did tribal structures in Country X exist before they were lost?
(B) Is the tribal structure the only part of traditional culture that Country X has lost? -- Using Variance test. Yes- supports the argument. No - brings an element of surprise that there might be some other thing that has factored in bringing the change. Clean OA.
(C) Are there any other countries with similar tribal structures that have also experienced recent economic growth?
(D) What percentage of residents in Country X considers the loss of traditional tribal structures to be a tragedy?
(E) Are there any sectors other than high technology that have experienced an increase in jobs?