Which excerpt most accurately shows why Douglass wrote this narrative? "When I was sent of errands, I always took my book O with me, and by going one part of my errand quickly, I found time to get a lesson before my return." "In learning to read, I owe almost as much to the bitter O opposition of my master, as to the kindly aid of my mistress. I acknowledge the benefit of both..." "This bread I used to bestow upon the hungry little o urchins, who, in return, would give me that more valuable bread of knowledge." "...if you teach that (slave) (speaking of myself) how to o read, there would be no keeping him. It would forever unfit him to be a slave."