Read this central idea found in Immigrant Kids, by Russell Freedman.

Inspection officers on ships and workers at Ellis Island often treated immigrants poorly on their journey to a new life.

Which line from the text best supports this central idea?

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

The line from the text that best supports the central idea is: "Scowling and gesturing, they pushed and pulled the passengers, herding us into separate groups as though we were animals." This line emphasizes the poor treatment and mistreatment of immigrants by inspection officers and workers at Ellis Island.