15. Lines 300–316: Which words show the author's reasoning in conductor of the under ground rail road

"Here they almost certainly stayed with Fredrick Douglass".

Explanation:

In the Biography of Harriet Tubman written by Ann Petry, the risks and sacrifices made by Tubman were extensively explained. In lines 300 to 316, Tubman made the statement above in reference to some slaves whom she was leading secretly out of the South to the North where they could gain freedom.

The phrase, almost certainly stayed shows how sure she was of the fact that the eleven slaves whom she was helping to escape were those that had been with Fredrick Douglass.

i believe the answer is b. we