Answer:
A. She wants to remain faithful to Romeo even if she must die.
Step-by-step explanation:
Translating this into modern tongue, Juliet says:
Do not tell me that you heard that I must be married to someone else unless you have an idea on how to stop it from happening. If you have no way to help me, then support my choice to die. God made me and Romeo fall in love, and you made us married. I have given Romeo my hand in marriage, and if I have to give my hand in marriage to another man, or if I am forced to love another man, then I will kill both my hand and my heart via dying by my own hand. If you cannot provide me an escape, then I will choose my own fate by k*ll*ng myself.