Which statement could best be used as an effective counterclaim to this claim? States should decide who is free and who is not.
A person who is free in one state cannot be a citizen.
Taney cannot deny Scott citizenship because it is a federal right.
Other states should have a say over one state's decision.

Taney cannot deny Scott citizenship because it is a federal right.

Explanation:

it is the background information on the characters and setting explained at the beginning of the story. the exposition will often have information about events that happened before the story began. the exposition is often the very first part of the plot.

i believe the answer is: b. mr. head had a long, tube-like face with a rounded open jaw and a short depressed nose.

this is because in the un-revised sentence it said that mr. heads face was long and tube-like, and he had a rounded open jaw. this is not a very grammatically correct because of how it seems to drag on with the and, replaced with, with, makes it sound more fluent in the description.