The statement above is true. Characterization in the Twenty Thousand Leagues Under the Sea is a too broad for a topic for a critical essay. A critical essay offers analytic topics and evaluation of it. It makes the reader or audience the chance to critically think about the topic which should be very specific.
A critical essay is a form of writing that analyzes a text. In a critical essay, an author makes a claim about particular ideas or themes and how they are conveyed in the text, it requires a deep understanding of the text and its most important elements. It requires evidence to support the claims.
Characterization literary device that is used to highlight and describe the details about a character personality and qualities. However, in a text like Twenty Thousand Leagues Under the Sea, analyzing only the characterization would not be enough to accomplish a critical essay, because the characters are only a small element of a bigger world depicted in the text.
It would be better if you Included An image or anything that can contribute to what you’re asking because without a picture or Text I can’t really help you
I prefer reading then anyliazing. It's called rhetorical analysis. I find this best becuase you can enjoy the text while reading, but still have a solid understanding. Plus, the understanding becuase stronger becuase you have the overall context of the text. I hope this answers your question.