Question

Will give medal
PLEASE HELP
What was the major issue that kept Dred Scott from getting his freedom?
Select one:
a. He should have tried when he was in a free state.
b. The Supreme Court ruled that he was not a U.S. citizen of the United States and could not sue.
c. They never should have taken the case to the Supreme Court.
d. He was married.
e. none of the above