THE CORRECT ANSWER IS (D).ROEV.WADEESTABLISHED CHOICE (A).GIDEONV....

21. The correct answer is (D).Roev.Wadeestablished choice (A).Gideonv.Wainwrightestablished choice (B). Choice (C) was theprinciple inSchenckv.United States. Korematsuv.United Statesisthe case referred to in choice (E).