wasn’t letting me ask my question so I took a screen shot, can y’all answer please?

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

What was the cause of the civil rights

What caused many of the moai at easter island to be destroyed?