The Reconstruction Amendments (the 13th, 14th, and 15th Amendments) indeed played a crucial role in shaping civil rights for Black Americans during and after Reconstruction. Among the options provided, the most accurate description is:
The Reconstruction Amendments freed Black Americans, defined citizenship, extended voting rights for Black American men, and established Jim Crow laws, but put restrictions on voting rights and did not prevent the separate but equal doctrine.
This choice correctly notes the abolition of slavery (13th Amendment), the definition of citizenship and due process (14th Amendment), and the extension of voting rights to Black men (15th Amendment), while also highlighting the subsequent establishment of Jim Crow laws that enforced racial segregation and the limitations on voting rights through various discriminatory practices, which were often justified under the "separate but equal" doctrine that emerged later.
However, note that while Jim Crow laws were established during the subsequent period, they represented a significant limitation on the rights initially extended by the Reconstruction Amendments. Thus, recognizing the ongoing struggles for civil rights even after these amendments is crucial.