I think it is either A or B... I'm not sure between the two, but at least I narrowed it down to those options. Hope this helps you a bit :)
C i think, hope this helps
Romeo has to leave during the day and the bird, the nightingale sings at night where as the morning lark is during the day. She does not want Romeo to leave so the bird tells what time of day it is.
Explanation:
It interprets the main idea