Definition:
Disillusion- disappointment resulting from the discovery that something is not as good as one believes it to be.
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Answer
Overall, Claudius's murder and incestuous marriage to Gertrude establish their corrupt kingdom, which Hamlet likens to a prison. Gertrude's lack of sympathy for her son and willingness to support Claudius's nefarious schemes also contributes to the rampant corruption throughout Denmark
C.keeping up appearances in society
When people are upset or stressed they look for comfort in muffins and bread & butter. The character of Algernon seems to have greed towards any form of food
The "purpose" is why you are reading it. So, the answer is B. The reason for which you read.