A. Melancholy and isolated because Rosaline has rejected him.
In such lines as " I have lost myself" and "What, shall I groan and tell thee?" Clearly express how Romeo is feeling dejected.
Benvolio will go on to encourage Romeo to look on other beauties, since he cannot have Rosaline.
Metaphor I think, are there options?
Answer:
I believe its fear.
Explanation:
Fear is a motivator to accept an idea.