Answer: c. Generally understood that the North Star led to freedom.
Step-by-step explanation:
Before and throughout the U.S. Civil War (the 1860s), fugitive slaves escaped to the north, finding shelter during the day, and moving during the night. Usually, they didn´t possess any maps or tools to help them. Polaris, known as the North Star, was their single lead, and it was found by following the arm of the Big Dipper constellation (Drinking Gourd).