Answer:
A. The author emphasizes that the painter lady is from out of town and acts differently than people in the community
Explanation:
Outsider can be defined as a person who doesn't belong to a certain community, group or profession.
In this story "The War Of The Wall" by Toni Cade Bambara we are introduced to a painter lady who has come from out of town to paint a neighborhood wall. She is faced with hostility from neighborhood children who have deep emotions and menories connecting them ti that wall and don't wanna see a stranger messing with it.
This, from the very beginning of the story establishes lady as an outsider.
Later on, this is emphasized with her rejection of offered food and strict choice of food she orders for dinner (probably due to her religion).
This, together with her being a stranger, labels her as an outsider in children's eyes and is responsible for their rude manners towards her.