How does Douglass prove this affirmation in killing a slave is not a crime in Talbot County, Maryland?

Iasked my mother what she wanted me to pick up from the grocery store. she said that we needed, peas, carrots, celery, milk, eggs, and which choice is not correct? a) sour cream. b) two types of cheese. c) to remember soft drinks as well. d) cheese crackers.