Read the excerpt below and answer the question.
Three days ago I was one of a small group of whites who had to get up and leave the table at the wedding reception of an African medical student; a white official of the gold-mining company for whom the bride’s father worked, and on whose property his house was, drove up to inform us that our invitations to the wedding were not sufficient to authorize our presence in living quarters provided for Africans.
What best describes the literary device Gordimer employs in this excerpt from "1959: What is Apartheid?" to develop the theme?
A. anecdote
B. characterization
C. imagery
D. symbolism