Excerpt from Sister Carrie, Chapter II
Theodore Dreiser

Together they finished the labour of the day, Carrie washing the dishes while Minnie undressed the baby and put it to bed. Minnie's manner was one of trained industry, and Carrie could see that it was a steady round of toil with her.

She began to see that her relations with Drouet would have to be abandoned. He could not come here. She read from the manner of Hanson, in the subdued air of Minnie, and, indeed, the whole atmosphere of the flat, a settled opposition to anything save a conservative round of toil. If Hanson sat every evening in the front room and read his paper, if he went to bed at nine, and Minnie a little later, what would they expect of her? She saw that she would first need to get work and establish herself on a paying basis before she could think of having company of any sort. Her little flirtation with Drouet seemed now an extraordinary thing.

"No," she said to herself, "he can't come here."

Why does the author include the last sentence of this excerpt?

A)
to demonstrate Carrie's poor judgment

B)
to express a realization that Carrie has

C)
to illustrate the mercurial nature of Carrie

D)
to hint at the question that will nag at Carrie's thought

Sister Carrie tells the story of a girl who moved from a small town to the city, narrating her story to fame and her own idea of the American Dream. It was written by American writer and journalist Theodore Dreiser, who was also part of the naturalist school.

The correct answer is letter B, since the last phrase expresses something that the character has already understood, and it is literally written at the beginning when she said "He could not come here," providing the information mentioned in letter B.