What was the main reason Japanese Americans were placed in internment camps?

They were being sent back to Japan in order to convince Hirohito to surrender and end the war

They were voluntarily living in work camps to help produce goods for the war effort

They were being held there temporarily until they could be sent to death camps like the Nazi’s did with the Jews.

They were being held prisoner because of the military emergency, which sparked fear that they would give information to the Japanese or attack the U. S.