What are talking about? ( not being rude)
I believe this is a dependant clause
Answer:
Born into slavery in Maryland, Harriet Tubman escaped to freedom in the North in 1849 to become the most famous "conductor" on the Underground Railroad. Tubman risked her life to lead hundreds of family members and other slaves from the plantation system to freedom on this elaborate secret network of safe houses.
I would go with B. "parlor generals and field deserters"
I believe that the correct answer is the first one, letter a.