The Following Questions Refer to the Excerpt Below

The following questions refer to the excerpt below.
"As a group,workers faced severe limitations on their political influence. The conservative nature of the major parties,institutional discrimination against third parties,and ethnic divisions that made some workingmen Democrats and others Republicans all placed obstacles in front of even those most empowered workers,the white men possessing citizenship. Far more striking was the way America's political system victimized female…and African-American workers through disenfranchisement… These barriers extinguished any possibility that American workers could become a united political force during the Gilded Age."
Julie Green,Pure and Simple Politics: The American Federation of Labor and Political Activism,
1881-1917,1998
-The nation's labor force would be made increasingly diverse in the early twentieth century as a result of

A) an influx of immigrants primarily from Western Europe.
B) the migration of African-Americans Northward in search of work.
C) national support for the growth of labor unions.
D) widespread condemnation of isolationist policies in the 1920s.