As described in Harriet Tubman: Conductor on the Underground Railroad, Tubman dedicated her life to

helping change the views of slave owners.
helping change laws about slavery.
helping enslaved people escape.
helping her family escape slavery.

answer d

explanation:

my best guess would be: d allusion

makes the most sense

question:

write a 1500-word historical investigation report. use exposition, narration, description, argumentation or some combination writing to support the main proposition. you will give this report orally.

there's many interesting events that have occurred over the course of humanity's existence. off the top of my head, you could discuss the cold war; the world wars (1 & 2); american civil rights movements; the russian or french revolutions. world war ii has ended. you are the leader of a great superpower—one of two   in the world. to keep the balance of power in your nation’s favor, you want to   gain as many allies as possible. you are particularly interested in gaining the   support of nations in africa, asia, and central and south america who do not   yet favor either superpower.   you call your advisers together to develop policies for making uncommin.

hope this !