What is the author's purpose for writing, as
demonstrated by this passage?
How does the author's viewpoint support this
purpose?

1.) to explain the difficulty and discomfort

2.) it is dark to show the horror of the situation

Explanation:

Just took it :)

Lying down was not an option, nor could we all sit down. We decide to take turns sitting. There was little air. The lucky ones found themselves near the window; they could watch the blooming countryside. After two days travel, thirst became intolerable, as did the heat. There was still some food left. But we never ate enough to satisfy our hunger. Our principle was to economize, to save for tomorrow. Tomorrow could be worse yet.

The underlined words and sentences show in the tone the difficulty and discomfort of the situation.

and found the answers with an educated guess and process of elimination

you did not put the article. so i cannot answer the question.