The Lack of Immigration from Asia During Much of the First

The lack of immigration from Asia during much of the first half of the twentieth century can be attributed most directly to ______.

A) the fact that most Asians preferred to emigrate to European democracies because of patterns of discrimination in the United States
B) the lack of political opportunities available to Asians in the United States
C) the fact that Asians have never seen the United States as providing economic opportunities for them
D) the fact that Japanese culture is marked by a fear of learning a new language
E) legislation passed by Congress that restricted immigration from China and Japan