the correct is C. I am from connexus social studies 8th grade here are the rest of the answers
#1 A. President Johnson encouraged former Confederate States to reject the 14th amendment, and D. President Johnson fired several military commanders who supported radical reconstruction
#2. D. They worried that the Supreme Court would find the civil rights act unconstitutional
#3. C. the black codes
#4. D. Radical republicans wanting to guarantee freedmen were given the right to vote