The high podium and single flight of stairs of the Roman Temple of Portunus reflects the influence of the _____

In Michelangelo's Florence Pietà , the normal Renaissance harmony is broken by the unstable composition and the ____________

Must be the figures but which one?

How does Michelangelo organize and give structure to the ceiling of the Sistine Chapel?

a. with an illusionistic architectural structure, filled with narrative scenes b. with one unifying scene c. with a pyramidal composition d. with a circular composition