What model may have inspired the presence of two apses and a side entrance at Saint Michael's, Hildesheim?

As performed, this selection is characterized by a great deal of?

a) rhythmic freedom b) rhythmic regularity c) rhythmic aleatory d) rhythmic patterning

To whom did Giorgio Vasari give the credit for "[having] revived the modern and excellent art of painting, introducing good drawing from live natural models, something which had not been done for more than two hundred years"?

A. Giotto di Bondone B. Cimabue C. Duccio di Buoninsegna D. Ambrogio Lorenzetti