B.
Homeschooling is an education system where a child is taught in his or her home.
The primary assumptions were that the Executive Branch, in the "prosecution of war", has the right to take every precaution and every action in order to prevent espionage and other domestic threats.
This was tied to the assumption that Japanese Americans presented a danger to the United States, and that their ultimate loyalty was to the Japanese Empire.
I believe the answer is D :)
