At the beginning of the story, Gregor Samsa may have transformed into an insect, yet as you progress through the series, it becomes evident that his essence remains unchanged. Transformation must result in significant changes, not solely in outward appearance but also internally. Despite his transformation, Gregor chose to continue working to provide for his family. He understood that once he could no longer support them as a human, they would have to manage independently.
Among all the options, option B is the most intricate. This complexity arises because it comprises two clauses to convey its message. Packing several clauses into a single sentence can leave the reader feeling rushed. A well-constructed sentence should be concise enough to be read in one breath while clearly conveying its meaning. One clause can suffice, and if additional information is necessary, it can be incorporated with conjunctions or transitional phrases, but one should avoid excessive use.