The option that limited opportunities for freedmen in the South after the Civil War ended is 3. the Black Codes.
The Black Codes were laws enacted by Southern states that restricted the rights and freedoms of African Americans. They aimed to control the labor and behavior of freedmen and maintain white supremacy in the post-Civil War era.
The other options had different impacts:
- Radical Reconstruction aimed to promote civil rights and integration for freedmen.
- Lincoln’s Ten Percent Plan was designed for reconstruction and allowed for a relatively lenient approach to reintegration of Southern states.
- The Fourteenth Amendment granted citizenship and equal protection under the law to all persons born or naturalized in the United States, thus expanding rights for freedmen.
So, the correct answer indicating limited opportunities is 3. the Black Codes.