Rusty James runs into his old friend Steve, whom he hasn't seen in all that time. They are on the beach, far from the original action. Rusty James has been "bumming around," not working since getting out of the reformatory after serving five years, and Steve is on vacation from college, where he's studying to become a high school teacher. Steve invites Rusty James to dinner, an invitation he has no intention of accepting. Steve is too much of a reminder of some bad times.
Answer: Mrs. Dubose
Explanation:
Technically most of the characters are because of they way they think and talk to the African Americans.
It means conditions that are on the margin, the margin being that region of the operational envelope that is right on the edge between acceptable and unacceptable.
:book