Explain how context plays a role in determining whether a writer uses language that is formal or informal. (2 points) I need an essay answer

it is the background information on the characters and setting explained at the beginning of the story. the exposition will often have information about events that happened before the story began. the exposition is often the very first part of the plot.

i decided to stay late in the laboratory to continue my experiment with the lightbulb. at midnight, thomas edison opened the door and saw all the stuff he was working on. the lightbulb, film and the transmitter. as he walks in an idea hits him on how the lightbulb would work. he would have to change a few wires around to get it to light up. when he did change the wires around it worked so he decided to write a telegraph to his friend to tell him about his success.   as he was packing up he grabbed the telegraph and walked to his home. he told his wife about the success and the next morning mailed the telegraph.

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answer :

the following two parts of the given excerpt from "beowulf" denote the importance of kinship and lineage :

1. hither to come; of (kinsmen's approval,

  word-leave of warriors), i ween that ye surely

2. (nothing have known. never a greater one

    of earls o’er the earth have i had a sight of)