The author uses this literary device called Figurative Language to express the feelings experienced; in this passage, the narrator talks about how the its mind and head were with the awful feeling of sadness. The author also talks about the sensation of space in which her mind was enclosed.
All this sentences and comparisons are part of a Figurative language that is used to make the speech more effective, persuasive, and impactful for the reader to feel more deeply the words of the narrator and could live through them. This figure goes beyond the literal meaning of the words and gives the reader more insights.
1. C. The work was difficult, yet Lucy was glad to have a job.
2. C. Folks were struggling to survive in most places, but in California they had jobs.
3. B. Dos Palos was a small community, but the land was good for farming.
I'm fairly certain of all these answers!
Hope this helps :)
A hook is used in the "introduction" to interest the reader in what he is going to read in the following paragraphs.