Answer:
Because your saying something else and asking something else
Explanation:
I can't think of four things but I was always taught to always cite everything. Even if you think something is an original idea or phrase, look it up and make sure and if someone else has said that just put it in your work cited because that could be considered plagiarism. Also always cite direct quotes
Answer:
B is correctly punctuated.
I feel that the missing word is most likely "lens" - check if it's among your options.
When something is compared to a lens through which the word is seen, it means that the world is seen through a certain perspective, that it's using a certain interpretation: here that of literary theory.
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