Answer:
b. upheld the legality of Japanese internment.
Explanation:
Korematsu vs United States was an exceptional case by which the Supreme Court of the United States of America Case have convicted Fred Korematsu who a Japanese American, for violating the orders of the military to relocate to internment camp. The act was widely criticized because the judgment was based on racism instead of evidences. It has shown the bigotry faced by many Japanese Americans during the Second World War.