I think a. use of verb tenses
"think"
In the first sentence, the "he" is a nominative as it is a subject.
In the second sentence it is an object as the form "me" is actually "I", but "i" is a nominative form and "me" is an objective form.
In the third sentence "Us" is also used in objective form as "us" is an object of an action by "my sister".
Answer:
Ethos can be established through narration, as many speakers and companies rely on a narrative account of events to show how they arrived at their present conclusion, or to describe how they fought a fair fight, produced a better product, or overcame a difficulty.
Explanation:
Because it has something covering it and he has to watch his back
