I am not sure if I am right or wrong but for the Greek tragedy structure doesn't it involve the the preplay proper, the play proper with exposition, conflict, climax, so on...and the postplay?

How did brunelleschi solve his problem with the dome of the florence cathedral? a. he created an outer support shell. b. he created many layers of support within the dome. c. he created external supports for the dome. d. all of the above