The Congress contribute to the extension of equal rights to marginalized groups in the 20th century by removing limitations on affirmative action programs at universities.
Despite that 14th Amendment granted liberties and rights to the enslaved people, there were some discrimination towards the minority groups especially the blacks.
However, in the 20th century, this has improved because of removal of limitations on affirmative action programs at universities.
Therefore, the Option A is correct.
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