An example of the dramatic irony in Romeo and Juliet, the sentence from all the given sentences describes briefly is as Romeo is pining for Rosaline, the audience knows he'll soon fall in love with Juliet. Hence, Option C is correct.
Who was Romeo?
In William Shakespeare's tragedy Romeo and Juliet, Romeo Montague is the male lead. He marries Juliet, a princess of the rival House of Capulet, whom he secretly loves, through a monk by the name of Friar Laurence.
He is the son of Lord Montague and his spouse, Lady Montague. Romeo is an attractive, wise, and sensitive young guy, perhaps around the age of sixteen. Despite being immature and impetuous, his idealistic nature and enthusiasm make him a very endearing person. He has absolutely no interest in using violence.
Thus, Option C is correct.