What Supreme Court decision in effect meant that the Constitution protected slavery?

1: Election of 1856
2: Dred Scott case
3: Compromise of 1850
4: Missouri Compromise
I am picking # 4 is this correct?

3 answers

I think I should change my answer to # 2 is this correct? It was decided Dred Scott was not free and Missouri Compromise protected slavery.
Were the Missouri Compromise, the Compromise of 1850, or ANY (except 2000) elections Supreme Court decisions?

You are right, the answer is #2, but you should know that that is the ONLY Supreme Court decision among the choices.
Yep