Question

by signing executive order no. 9066, president roosevelt assumed that
no one would actually be interned in camps.
he was doing what was best for his nation.
his direction and command would end the war.
the internment camps would be permanent.

Explanation:

Executive Order 9066 authorized the internment of Japanese Americans during WWII. President Franklin D. Roosevelt framed this action as a national security measure, claiming it was necessary to protect the U.S. from potential espionage or sabotage, so he believed he acted in the nation's best interest. The other options are incorrect: internment did occur, the order did not end the war, and the camps were not intended to be permanent.

Answer:

he was doing what was best for his nation.