The correct answer among the choices provided is the third option. Two independent clauses incorrectly joined are referred to as a fused sentence. A fused sentence is also called a run-on sentence. To correct this, an appropriate conjunction or punctuation mark must be put in between the clauses.
I would have to say B. But don't rely on this! Here is my explanation;
High-born would mean that he is more important or in a higher grade. In this text, he refers him to be high-born because he is rich and she loves him. He [not the high-born] Loves her so much, he is there when she is on the boat [or what he refers to], her death, and more places [I have not read this poem in a while].
Then again, don't rely on this answer! I did my best. It was either B. or C. to me. B. made more sense to me, but we are two different people!
The answers from the choices above are the 2nd option and the 3rd option!
Teamwork has nothing much to do with this so not that
Taxes isn't mainly focused on in the story
B seems like it could be but compared to depths of corruption, D seems to be the most emphasized