Answer:
In the Fred Korematsu case, the US Supreme Court ruled that the internment order was constitutional because national defense came first.
Step-by-step explanation:
The Japanese internment of 1942 was a direct result of the attack on Pearl Harbor by Japanese troops. The order was given by Executive Order 9066 that makes it compulsory to put every one of Japanese descent in a particular area, away from the common American people.
The case of Fred Korematsu against the United States was after this order where the former refused to comply with the evacuation. His stance was that the very Order is a direct violation of the Fifth Amendment of the United States Constitution.
In this case, the Supreme Court ruled in favor of the US, stating that the internment was a necessity and was constitutional as it pertains to the security of the nation.
Thus, the correct answer is the third option.