Which of the choices below is NOT one of the themes of the play?

a. Love.

b. Destiny.

c. Peace.

It is not absolutly clear since you didn't say which play you are talking about. In case you mean Romeo and Juliet, the answer is definitely peace, because these are two main problems that reader come across while reading this Shakespeare's work. This story is about tragedy that was caused by hard feelings and bitter destiny which don't let love to come true.