The description of the family feud and the depiction of Romeo as a dreamy and lovesick teenager are part of the exposition of the play because the information introduces the audience to the characters.
The meeting at the Capulets’ ball and Juliet’s directive to the Nurse to find out about the wedding plans are part of the rising action because these events help set up later conflicts.
Romeo killing Tybalt and his banishment from Verona are part of the climax because these events lead to irrevocable consequences on which the final resolution hinges.
Capulet’s decision to marry Juliet to Paris and Friar Laurence’s plan to reunite Romeo and Juliet are part of the falling action because these events involve characters trying to deal with the fallout of the climax.
The death of Juliet and the Friar’s explanation are part of the denouement because these events conclude the action and resolve the conflicts.