The answer is B. Slavery ended long before that point, Martin Luther King Jr. spoke up about segregation. So A doesn’t make sense. C doesn’t make sense because MLK didn’t think things were going well, he spoke up because things WERENT going well. D doesn’t make sense either.
The correct answer is probate.
Probate is the term for the procedure in which a will is proven valid. Once proven valid, the will becomes a public document. After probate, a valid will is recognized as the deceased's last will and testament.