Which of the following is an example of dialogue? a. although he had never seen the ocean before, it somehow felt familiar. b. roses and red, violets are blue. maples will shedtheir summer hue. c. ian. where have you been? sam. nowhere. d. a dusty office. mara enters stage right and hesitates just before sitting down.

i would say that these are the two thesis statements best for a literary analysis essay on recurring themes in shakespeare's romeo and juliet:

1.  in romeo and juliet, shakespeare demonstrates that love comes in a variety of forms, be it romantic, familial, or between friends.

2.  shakespeare explores the struggle for identity through the character of juliet in his play romeo and juliet.

the other theses aren't reoccurring in this play. 

explanation: