From the following choices, the credible source for an essay about the civil rights movement in Mississippi is a wiki site about the 20th century.
The American civil rights movement was a political movement in the US to abolish racial segregation and discrimination.
The credible source for an essay about the civil rights movement in Mississippi is a wiki site about the 20th century.
Therefore, D is the correct option.
Learn more about the civil rights movement here:
https://brainly.com/question/24078961
#SPJ1