I suffered more anxiety than most of my fellow-slaves. I had known what it was to be kindly treated; they had known nothing of the kind. They had seen little or nothing of the world. They were in very deed men and women of sorrow, and acquainted with grief. Their backs had been made familiar with the bloody lash, so that they had become callous; mine was yet tender; for while at Baltimore, I got few whippings, and few slaves could boast of a kinder master and mistress than myself; . . . How does the excerpt best support Douglass’s purpose to inform the reader about slavery?

It contains evidence that Douglass was treated well by his master.
It contains a comparison of Douglass to the other enslaved persons.
It contains descriptions of the brutal effects of slavery on enslaved people.
It contains a strong argument in favor of the abolition of slavery.