Read these lines: "This bread I used to bestow upon the hungry little urchins, who, in return, would give me that more valuable bread of knowledge. I am strongly tempted to give the names of two or three of those little boys, as a testimonial of the gratitude and affection I bear them." The phrase "bread of knowledge" works by

1. Real bread moves one way in the quoted lines, from the narrator to the hungry boys. 2. What comes back is called bread as well, though it is knowledge, and it is called the more valuable of the two. 3. Using the same word for both sides turns the lesson into a second loaf, so the trade is food for food, option D. 4. Option A replaces the traded loaf with money, which the quoted lines never mention. 5. Option C makes the narrator go hungry, but he says the bread was always in the house and he was welcome to it. _Source: Frederick Douglass, Narrative of the Life of Frederick Douglass (1845), public domain_