Read this central idea found in Immigrant Kids, by Russell Freedman. Immigrants were often treated poorly on their journey to a new life.

Which line from the text best supports this central idea?

A. Most of these immigrants were poor.
B. The voyage was an ordeal, but it was worth it.
C. Scowling and gesturing, they pushed and pulled the passengers, herding us into separate groups as though we were animals.
D. Filing into an enormous inspection hall, the immigrants formed long lines separated by iron railings.