In these lines from Act II, Scene ii of The Tragedy of Romeo and Juliet, Juliet is expressing the idea that a name itself does not affect the essence or the quality of a person or thing. Specifically, she is lamenting the fact that Romeo is a Montague, a name that represents a family feud with her own family, the Capulets. Therefore, the correct answer is:
B. She loves Romeo even though he is a Montague.
This highlights her feelings of love for him despite the conflict represented by their family names.