Read Mary Antin’s biography from "The Promised Land." Mary Antin (1881-1949), immigration rights activist, came to the United States during the third great wave of immigration (1881-1920), when more than 23 million immigrants came to America. These new arrivals were largely from eastern and southern Europe. Although born into poverty, Antin rose out of it through education and eventually attended Columbia University.
Based on this biography, Antin most likely continued to write about
A. Europe.
B. Boston.
C. exams.
D. immigration.