Read this sentence from "the final assault."

my thirty-pound load seemed to crush me downward and stifled all enthusiasm, but when i turned on the oxygen and breathed it deeply, the burden seemed to lighten and the old urge to get to grips with the mountain came back.

in this sentence, the narrator gives an example of why oxygen is vital to climbers on mt. everest. how does the narrator develop this concept in the rest of the narrative?

question 7 options:

1. by explaining how climbers carry their oxygen equipment

2. by showing instances where a lack of oxygen affects climbers

3. by describing times when climbers used oxygen while climbing

4. by giving details about how oxygen equipment can malfunction

the purpose of the heading in the passage is to identify who is telling the story.

this excerpt is part of the book sugar changed the world (2010) written by marc aronson and marina budhos. as the book has been written by two people, the heading "marc" indicates that this specific excerpt is being narrated by aronson. in the fragment, marc describes his grandfather's story after hearing it from his cousin. however, there are other excerpts where budhos is the one that tells the story of her family.

aronson and budhos, who are husband and wife in real life, decided to write sugar changed the world when they found out how sugar, which had an important role in slavery and economy, changed their ancestors' lives.

this is the sentence that best shows that fast food restaurants are designed for using unskilled labor. 

d. lennie pats too hard, and then panics.

which book is it because i might knoe the anwser