Which describes the supreme court's ruling in the dred scott case?
a. kansas and nebraska would henceforth be free states.
b. runaway slaves could not be returned to their owners.
c. the missouri compromise was upheld as constitutional.
d. neither free blacks nor slaves could be american citizens.

The answer is D. The Dred Scott case was a fight over civil rights. Dred scott wanted to be free since his owner had previously been in a free state. The judges voted in favor of the slave states. They believed that slaves were property and property could not be taken from its owner without just reason.  

Your correct answer in c