I am unsure if this is correct (especially since this is late), but this is the possible full question:
Read the excerpt from chapter 2 of Night.
Lying down was not an option, nor could we all sit down. We decided to take turns sitting. There was little air. The lucky ones found themselves near a window; they could watch the blooming countryside flit by.
After two days of travel, thirst became intolerable, as did the heat.
What is the purpose of this passage?
O to describe how the prisoners live
O to tell where the prisoners are going
O to establish the setting as a moving train
O to indicate where the train is headed
The answer is to establish the setting as a moving train (3rd option).