What was the most serious constitutional question raised by the presence of internment camps in
the united states during world war ii ?
most detainees were u. s. citizens held without charges or the prospect of a speedy
hearing
detainees were not allowed to speak freely to one another or practice their religions.
the press was not permitted to report on activities inside the camps.
camps prevented detainees from exercising their right to bear arms.

The answer is the first option "Most detainees were U.S. citizens and were being held without charges or the prospect of a speedy hearing". During WWII, the United States placed Japanese-American citizens in internment camps because they were of Japanese descent, so they figured that every single one of them was a spy. This was an unjust and unconstitutional act, that would embarrass the United States for years to come.  

I hope this helps :) 

abraham lincoln