The best answer is A.
although B and C are correct, they mostly miss the point of the sentence.
Answer:
1. Furthermore
2. However
3. Yet
4. Because
5. I don't know to be honest, I don't want to give you a wrong answer on this one!
Explanation:
The answer I think is
<span>observes the Lady's beauty through them
</span><span>
weeps over his love for the Lady with them
these were the answers I chose! Hope this helps!!</span>