I believe they were adapted from India.
Answer:
People were angry with the Japanese after the attack on Pearl Harbor so people acted out against Japanese-Americans
Explanation:
They went as far as to put all japanese americans on the west coast into internment camps.
The American attitude shifted in favor of rights for Native Americans. This is based on "Polls showed that Americans believed in rights for Native Americans". Why it's not A is because it wasn't the polling that contributed to the act, but what the polls showed which is C.