A. Most lines use iambic pentameter, which doesn't resemble the way we speak now.
You might call your continual problems a curse because someone else is continuing to be blessed.
If you cant handle someone when they are at their darkest hardest point, then you don't deserve them at their highest and best point.
The answer is B because it puts a coma in the correct spot to pause between the first half of the sentence and the second. The others either randomly placed a period, using the wrong word choices, or made it a run on sentence. :)