In which excerpt from Harriet Tubman: Conductor on the Underground Railroad is Tubman using logos?

“He would give all of them a new pair of shoes. Everybody. He always did. Once they reached his house in Wilmington, they would be safe. He would see to it that they were.”

“She tried to explain to them why none of them could go back to the plantation. If a runaway returned, he would turn traitor, the master and the overseer would force him to turn traitor.”

“She had never been in Canada but she kept painting wondrous word pictures of what it would be like. She managed to dispel their fear of pursuit, so that they would not become hysterical, panic-stricken.”

“Sometimes she told them things to make them laugh, sometimes she sang to them, and heard the eleven voices behind her blending softly with hers, and then she knew that for the moment all was well with them.”