In creating this drawing, da Vinci drew upon:
(A) Greek principles of number ratios.
(B) Medieval theological principles.
(C) Contemporary anatomical models.
(D) The scientific method.
![In creating this drawing da Vinci drew upon A Greek principles of number ratios B Medieval theological principles C Contemporary anatomical models D The scienti class=](https://us-static.z-dn.net/files/d6c/e46699ba020b2cb98a4b727793c09ee8.jpg)