Answer:
B. Yes, because the federal government has an important interest in furthering the equal protection provisions of the Fourteenth Amendment.
Step-by-step explanation:
Section 1 of the 14th Amendment gives U.S. citizenship to people born or naturalized in the U.S, protects their privileges or immunities and guarantees due process of law and the equal protection of the laws with the purpose to make it illegal to discriminate against a person because of race.
Therefore, if Congress enacts a statute that purports to ban all discrimination against African-Americans in any commercial transaction within the United States, it does so to further the equal protection provision of the Fourteenth Amendment that prohibits racial discrimination especially discrimination against African Americans which is a group that was widely discriminated for decades.