The reason for the assumption that the individuals involved in Roosevelt's order numbered 9066 aimed for internment would be:
B). They were Japanese Americans.
Japanese American
- As per the details provided in the excerpt, the readers can understand the implicit meaning regarding the individuals who were involved in the executive order of Roosevelt.
- These individuals were Japanese Americans and their confinement or internment is assumed by the readers.
- Thus, option B is the correct answer.
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