Answer:
To explain why the woman left Ireland for America.
Step-by-step explanation:
The given passage from "The Pursuit of Happiness" presents a woman who had just arrived from her home in Ireland. She had left that country to try for a better living condition, especially for her daughter who she wants to be a teacher.
The inclusion of the potatoes in the process is to give the readers an insight into why the woman left Ireland. She said that she will work as a "chambermaid" so that her child can "become a teacher with hands the color of cream", as a contrast to her own hands that'll become "red and raw" with all the scrubbing of floors and washing of linens.