What is not a type of support used in argumentative writing

Which historical detail can best clarify a reader’s understanding of the information in the excerpt? immigrant factory workers who spoke the same language were separated from each other at work. immigrant factory workers who spoke the same language were known to talk too much at work. immigrant factory workers had to pay rent for their chairs and the supplies they needed at work. immigrant factory workers were crowded into unsafe buildings with locked doors and fire escapes.

Does anyone know the answers to these two? i don’t want to have to guess, you!

Describe the cluster of trailers from the loch ness monster by john mcphee