Answer: c. to support nativist anti-immigration sentiment
Step-by-step explanation:
Following a wave of migration in the early 20th century, there developed an anti-immigrant sentiment in a lot of Americans who looked down on these immigrants and believed that they had come to engage in bad behavior that was against what they considered to be American values.
They did not want the Catholics to come in and as it was the Prohibition era, did not want people they considered alcoholics as well. They also detested the Communists and believed a lot of Easter Europeans were Communist.