Answer:
The Freeport Doctrine was a political position expressed by Stephen A. Douglas during the Lincoln-Douglas debates in 1858. It stated that the issue of slavery in the western territories could be decided by the people living there, regardless of the Supreme Court's Dred Scott decision, which declared that Congress had no power to regulate slavery in the territories. Therefore, the position that accurately summarizes the Freeport Doctrine is:
O the idea that people in territories could vote to end slavery.