C. Writing Write a paragraph about the dramatic changes that took place for African Americans during the Civil War era and Reconstruction using the following terms.
Emancipation Proclamation Thirteenth Amendment Fourteenth Amendment
Fifteenth Amendment Ku Klux Klan

its d. you give me brainliest

would it be plagiarism to copy and paste off of here? ?

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."