The purpose of the Blackstone Commentaries on the Laws of England is to advocate a common law. Thus, the answer is letter B. The commentary was originally published by Clarendon Press at Oxford. This was divided on the four: rights of persons, rights of things, private wrongs, and public wrongs.
I would go with Brown v Board of Education. It gave more rights to African Americans and made them one step closer into beating segregation. Through the court case, segregation in schools was deemed unconstitutional, and so was segregation in other public places.
25,000 cg is equal to 250 grams :)