B. Nonessential. Commas are used to set off nonessential (or nonrestrictive) subordinate clauses in sentences. These clauses are not necessary to the basic meaning of the sentence. The nonessential subordinate clause could be omitted from the sentence without changing the meaning of the sentence.
Climax is the term used to refer to the part of story or play where the tension or action reaches its highest part. Sometimes, the climax is a "crisis" point in the plot. The climax is represented by the high point, and the action of the story begins to fall from there, until problems are resolved
Answer:The allegory of the cave is an extended metaphor and it provides an insight into Plato’s view of education. The people in the cave represent us as a society, and Plato is suggesting that we are the prisoners in the cave looking at only the shadows of things. However, the cave also represents the state of humans; we all begin in the cave.