Final answer:
The Civil Rights Act of 1964 was justified due to the federal government's power to prohibit racial discrimination by businesses under the commerce clause.
Step-by-step explanation:
Out of the options provided, the Civil Rights Act of 1964 was justified due to the federal government's power to prohibit racial discrimination by businesses under the commerce clause. This act was a landmark legislation that aimed to end segregation and ensure equal rights for African Americans. It prohibited discrimination in public accommodations, employment, and federally funded programs.
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