What could fresco artists convey that medieval painters could not? how does their work embody characteristics of humanism?

Here are the answers to the given questions above. Fresco artists convey PERSPECTIVE OF 3D that medieval painters could not. This accomplishment embodies characteristics of humanism when they began to paint the human body for what they thought was beauty, not realism. Hope this answer helps.

He advocated for a separation of powers of the government and the ones enforcing the law.