Question

in its ruling on the dred scott case, the supreme court decided that congress could not ban slavery in the
free states.
slave states.
territories.
free republics.

Explanation:

The Dred Scott case ruling by the Supreme Court (Chief Justice Taney) decided that Congress could not prohibit slavery in the territories. The key point is the Court's decision on the status of slavery in territories, and the correct option related to that is "territories" as the ruling held that the Missouri Compromise (which restricted slavery in territories) was unconstitutional, meaning Congress couldn't ban slavery in territories.

Answer:

C. territories