An epiphany is a sudden realization of something that you previously hadn't understood or known. So, having this in mind, an example of epiphany here is Bernice suddenly understands how others see her.
Third-person omniscient narrators are likely to be reliable because they're impersonal and know everything about the story.
Because they are not being paid a lot and teaching us stuff
Williams show that the wheelbarrow is an essential part of life on a farm through the phrase: "so much depends upon" it leads the readers to infere the importance of the wheelbarrow.
Answer: yes, i think so but can differ in different situations. But generally, then yes? ( still my opinion )