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